a2p
accept
access
acct
addftinfo
addr2line
adjtime
afmtodit
after
aio_cancel
aio_error
aio_read
aio_return
aio_suspend
aio_waitcomplete
aio_write
alias
aliases
alloc
anvil
append
apply
apropos
ar
array
as
asa
asn1parse
at
atq
atrm
attemptckalloc
attemptckrealloc
authlib
authtest
autopoint
awk
b64decode
b64encode
basename
batch
bc
bdes
bell
bg
bgerror
biff
big5
binary
bind
bindkey
bindtags
bindtextdomain
bio
bitmap
blowfish
bn
bootparams
bootptab
bounce
brandelf
break
breaksw
brk
bsdiff
bsdtar
bsnmpd
bspatch
bthost
btsockstat
buffer
builtin
builtins
bunzip2
button
byacc
bzcat
bzegrep
bzfgrep
bzgrep
bzip2
c2ph
c89
c99
ca
cal
calendar
canvas
cap_mkdb
case
cat
catch
catman
cc
cd
cdcontrol
chdir
checkbutton
checknr
chflags
chfn
chgrp
chio
chkey
chmod
chown
chpass
chroot
chsh
ci
ciphers
ckalloc
ckdist
ckfree
ckrealloc
cksum
cleanup
clear
clipboard
clock
clock_getres
clock_gettime
clock_settime
close
cmp
co
col
colcrt
colldef
colors
colrm
column
comm
command
compile_et
complete
compress
concat
config
connect
console
continue
core
courierlogger
couriertcpd
cp
cpan
cpio
cpp
creat
crl
crontab
crunchgen
crunchide
crypt
crypto
csh
csplit
ctags
ctm
ctm_dequeue
ctm_rmail
ctm_smail
cu
cursor
cursors
cut
cvs
date
dbiprof
dbiproxy
dc
dcgettext
dcngettext
dd
dde
default
defer
deliverquota
des
destroy
devfs
df
dgettext
dgst
dh
dhparam
dialog
diff
diff3
dig
dir
dirent
dirname
dirs
discard
disktab
dngettext
do
domainname
done
dprofpp
dsa
dsaparam
dtmfdecode
du
dup
dup2
eaccess
ec
ecdsa
echo
echotc
ecparam
ed
edit
editrc
ee
egrep
elf
elfdump
elif
else
enc
enc2xs
encoding
end
endif
endsw
engine
enigma
entry
env
envsubst
eof
eqn
err
errno
error
errstr
esac
ethers
euc
eui64
eval
event
evp
ex
exec
execve
exit
expand
export
exports
expr
extattr
extattr_delete_fd
extattr_delete_file
extattr_get_fd
extattr_get_file
extattr_set_fd
extattr_set_file
f77
false
famm
famx
fblocked
fbtab
fc
fchdir
fchflags
fchmod
fchown
fcntl
fconfigure
fcopy
fdescfs
fdformat
fdread
fdwrite
fetch
fg
fgrep
fhopen
fhstat
fhstatfs
fi
file
file2c
fileevent
filename
filetest
find
find2perl
finger
flex
flock
flush
fmt
focus
fold
font
fontedit
for
foreach
fork
format
forward
fpathconf
frame
from
fs
fstab
fstat
fstatfs
fsync
ftp
ftpchroot
ftpusers
ftruncate
futimes
g711conv
gb2312
gb18030
gbk
gcc
gcore
gcov
gdb
gencat
gendsa
genrsa
gensnmptree
getconf
getdents
getdirentries
getdtablesize
getegid
geteuid
getfacl
getfh
getfsstat
getgid
getgroups
getitimer
getlogin
getopt
getopts
getpeername
getpgid
getpgrp
getpid
getppid
getpriority
getresgid
getresuid
getrlimit
getrusage
gets
getsid
getsockname
getsockopt
gettext
gettextize
gettimeofday
gettytab
getuid
glob
global
gmake
goto
gperf
gprof
grab
grep
grid
grn
grodvi
groff
groff_font
groff_out
groff_tmac
grog
grolbp
grolj4
grops
grotty
group
groups
gunzip
gzcat
gzexe
gzip
h2ph
h2xs
hash
hashstat
hd
head
help2man
hesinfo
hexdump
history
host
hostname
hosts
hosts_access
hosts_options
hpftodit
http
hup
i386_get_ioperm
i386_get_ldt
i386_set_ioperm
i386_set_ldt
i386_vm86
iconv
id
ident
idprio
if
ifnames253
ifnames259
image
imapd
incr
indent
indxbib
info
infokey
inode
install
instmodsh
interp
intro
introduction
ioctl
ipcrm
ipcs
ipf
ipftest
ipnat
ippool
ipresend
issetugid
jail
jail_attach
jobid
jobs
join
jot
kbdcontrol
kbdmap
kcon
kdestroy
kdump
kenv
kevent
keycap
keylogin
keylogout
keymap
keysyms
kgdb
kill
killall
killpg
kinit
kldfind
kldfirstmod
kldload
kldnext
kldstat
kldsym
kldunload
klist
kpasswd
kqueue
kse
kse_create
kse_exit
kse_release
kse_switchin
kse_thr_interrupt
kse_wakeup
ktrace
label
labelframe
lam
lappend
last
lastcomm
lastlog
lchflags
lchmod
lchown
ld
ldap
ldapadd
ldapcompare
ldapdelete
ldapmodify
ldapmodrdn
ldappasswd
ldapsearch
ldapwhoami
ldd
leave
less
lesskey
lex
lgetfh
lhash
libnetcfg
library
limit
limits
lindex
link
linprocfs
linsert
lint
lio_listio
list
listbox
listen
lj4_font
lkbib
llength
lmtp
ln
load
loadfont
local
locale
locate
lock
lockf
log
logger
login
logins
logname
logout
look
lookbib
lorder
lower
lp
lpq
lpr
lprm
lptest
lrange
lreplace
ls
lsearch
lseek
lset
lsort
lstat
lsvfs
lutimes
lynx
m4
madvise
magic
mail
maildiracl
maildirkw
maildirmake
mailq
mailx
make
makeinfo
makewhatis
man
manpath
master
mc
mcedit
mcview
md2
md4
md5
mdc2
memory
menu
menubar
menubutton
merge
mesg
message
mincore
minherit
minigzip
mkdep
mkdir
mkfifo
mkimapdcert
mklocale
mknod
mkpop3dcert
mkstr
mktemp
mlock
mlockall
mmap
mmroff
modfind
modfnext
modnext
modstat
moduli
more
motd
mount
mprotect
mptable
msdos
msdosfs
msgattrib
msgcat
msgcmp
msgcomm
msgconv
msgen
msgexec
msgfilter
msgfmt
msggrep
msginit
msgmerge
msgs
msgunfmt
msguniq
mskanji
msql2mysql
msync
mt
munlock
munlockall
munmap
mv
myisamchk
myisamlog
myisampack
mysql
mysqlaccess
mysqladmin
mysqlbinlog
mysqlcheck
mysqld
mysqldump
mysqld_multi
mysqld_safe
mysqlhotcopy
mysqlimport
mysqlshow
mysql_config
mysql_fix_privilege_tables
mysql_zap
namespace
nanosleep
nawk
nc
ncal
ncplist
ncplogin
ncplogout
neqn
netconfig
netgroup
netid
netstat
networks
newaliases
newgrp
nex
nfsstat
nfssvc
ngettext
nice
nl
nm
nmount
nohup
nologin
notify
nroff
nseq
nslookup
ntp_adjtime
ntp_gettime
nvi
nview
objcopy
objdump
objformat
ocsp
od
onintr
open
openssl
opieaccess
opieinfo
opiekey
opiekeys
opiepasswd
option
options
oqmgr
pack
package
packagens
pagesize
palette
pam_auth
panedwindow
parray
passwd
paste
patch
pathchk
pathconf
pawd
pax
pbm
pcre
pcreapi
pcrebuild
pcrecallout
pcrecompat
pcrecpp
pcregrep
pcrematching
pcrepartial
pcrepattern
pcreperform
pcreposix
pcreprecompile
pcresample
pcretest
perl
perl56delta
perl58delta
perl561delta
perl570delta
perl571delta
perl572delta
perl573delta
perl581delta
perl582delta
perl583delta
perl584delta
perl585delta
perl586delta
perl587delta
perl588delta
perl5004delta
perl5005delta
perlaix
perlamiga
perlapi
perlapio
perlapollo
perlartistic
perlbeos
perlbook
perlboot
perlbot
perlbs2000
perlbug
perlcall
perlcc
perlce
perlcheat
perlclib
perlcn
perlcompile
perlcygwin
perldata
perldbmfilter
perldebguts
perldebtut
perldebug
perldelta
perldgux
perldiag
perldoc
perldos
perldsc
perlebcdic
perlembed
perlepoc
perlfaq
perlfaq1
perlfaq2
perlfaq3
perlfaq4
perlfaq5
perlfaq6
perlfaq7
perlfaq8
perlfaq9
perlfilter
perlfork
perlform
perlfreebsd
perlfunc
perlglossary
perlgpl
perlguts
perlhack
perlhist
perlhpux
perlhurd
perlintern
perlintro
perliol
perlipc
perlirix
perlivp
perljp
perlko
perllexwarn
perllinux
perllocale
perllol
perlmachten
perlmacos
perlmacosx
perlmint
perlmod
perlmodinstall
perlmodlib
perlmodstyle
perlmpeix
perlnetware
perlnewmod
perlnumber
perlobj
perlop
perlopenbsd
perlopentut
perlos2
perlos390
perlos400
perlothrtut
perlpacktut
perlplan9
perlpod
perlpodspec
perlport
perlqnx
perlre
perlref
perlreftut
perlrequick
perlreref
perlretut
perlrun
perlsec
perlsolaris
perlstyle
perlsub
perlsyn
perlthrtut
perltie
perltoc
perltodo
perltooc
perltoot
perltrap
perltru64
perltw
perlunicode
perluniintro
perlutil
perluts
perlvar
perlvmesa
perlvms
perlvos
perlwin32
perlxs
perlxstut
perror
pfbtops
pftp
pgrep
phones
photo
pic
pickup
piconv
pid
pipe
pkcs7
pkcs8
pkcs12
pkg_add
pkg_check
pkg_create
pkg_delete
pkg_info
pkg_sign
pkg_version
pkill
pl2pm
place
pod2html
pod2latex
pod2man
pod2text
pod2usage
podchecker
podselect
poll
popd
popup
posix_madvise
postalias
postcat
postconf
postdrop
postfix
postkick
postlock
postlog
postmap
postqueue
postsuper
pr
pread
preadv
printcap
printenv
printf
proc
procfs
profil
protocols
prove
proxymap
ps
psed
psroff
pstruct
ptrace
publickey
pushd
puts
pwd
pwrite
pwritev
qmgr
qmqpd
quota
quotactl
radiobutton
raise
rand
ranlib
rcp
rcs
rcsclean
rcsdiff
rcsfile
rcsfreeze
rcsintro
rcsmerge
read
readelf
readlink
readonly
readv
realpath
reboot
recv
recvfrom
recvmsg
red
ree
refer
regexp
registry
regsub
rehash
remote
rename
repeat
replace
req
reset
resolver
resource
return
rev
revoke
rfcomm_sppd
rfork
rhosts
ripemd
ripemd160
rlog
rlogin
rm
rmd160
rmdir
rpc
rpcgen
rs
rsa
rsautl
rsh
rtld
rtprio
rup
ruptime
rusers
rwall
rwho
s2p
safe
sasl
sasldblistusers2
saslpasswd2
sbrk
scache
scale
scan
sched
sched_getparam
sched_getscheduler
sched_get_priority_max
sched_get_priority_min
sched_rr_get_interval
sched_setparam
sched_setscheduler
sched_yield
scon
scp
script
scrollbar
sdiff
sed
seek
select
selection
semctl
semget
semop
send
sendbug
sendfile
sendmail
sendmsg
sendto
services
sess_id
set
setegid
setenv
seteuid
setfacl
setgid
setgroups
setitimer
setlogin
setpgid
setpgrp
setpriority
setregid
setresgid
setresuid
setreuid
setrlimit
setsid
setsockopt
settc
settimeofday
setty
setuid
setvar
sftp
sh
sha
sha1
sha256
shar
shells
shift
shmat
shmctl
shmdt
shmget
showq
shutdown
sigaction
sigaltstack
sigblock
sigmask
sigpause
sigpending
sigprocmask
sigreturn
sigsetmask
sigstack
sigsuspend
sigvec
sigwait
size
slapadd
slapcat
slapd
slapdn
slapindex
slappasswd
slaptest
sleep
slogin
slurpd
smbutil
smime
smtp
smtpd
socket
socketpair
sockstat
soelim
sort
source
spawn
speed
spinbox
spkac
splain
split
squid
squid_ldap_auth
squid_ldap_group
squid_unix_group
sscop
ssh
sshd_config
ssh_config
stab
startslip
stat
statfs
stop
string
strings
strip
stty
su
subst
sum
suspend
swapoff
swapon
switch
symlink
sync
sysarch
syscall
sysconftool
sysconftoolcheck
systat
s_client
s_server
s_time
tabs
tail
talk
tar
tbl
tclsh
tcltest
tclvars
tcopy
tcpdump
tcpslice
tcsh
tee
tell
telltc
telnet
term
termcap
terminfo
test
texindex
texinfo
text
textdomain
tfmtodit
tftp
then
threads
time
tip
tk
tkerror
tkvars
tkwait
tlsmgr
tmac
top
toplevel
touch
tput
tr
trace
trafshow
trap
troff
true
truncate
truss
tset
tsort
tty
ttys
type
tzfile
ui
ul
ulimit
umask
unalias
uname
uncomplete
uncompress
undelete
unexpand
unhash
unifdef
unifdefall
uniq
units
unknown
unlimit
unlink
unmount
unset
unsetenv
until
unvis
update
uplevel
uptime
upvar
usbhidaction
usbhidctl
users
utf8
utimes
utmp
utrace
uudecode
uuencode
uuidgen
vacation
variable
verify
version
vfork
vgrind
vgrindefs
vi
vidcontrol
vidfont
view
virtual
vis
vt220keys
vwait
w
wait
wait3
wait4
waitpid
wall
wc
wget
what
whatis
where
whereis
which
while
who
whoami
whois
window
winfo
wish
wm
write
writev
wtmp
x509
xargs
xgettext
xmlwf
xstr
xsubpp
yacc
yes
ypcat
ypchfn
ypchpass
ypchsh
ypmatch
yppasswd
ypwhich
yyfix
zcat
zcmp
zdiff
zegrep
zfgrep
zforce
zgrep
zmore
znew
_exit
__syscall
 
FreeBSD/Linux/UNIX General Commands Manual
Hypertext Man Pages
telnet
 
TELNET(1)		FreeBSD General Commands Manual 	     TELNET(1)

NAME
     telnet -- user interface to the TELNET protocol

SYNOPSIS
     telnet [-468EFKLNacdfruxy] [-S tos] [-X authtype] [-e escapechar]
	    [-k realm] [-l user] [-n tracefile] [-s src_addr] [host [port]]

DESCRIPTION
     The telnet command is used to communicate with another host using the
     TELNET protocol.  If telnet is invoked without the host argument, it
     enters command mode, indicated by its prompt (``telnet>'').  In this
     mode, it accepts and executes the commands listed below.  If it is
     invoked with arguments, it performs an open command with those arguments.

     Options:

     -4      Forces telnet to use IPv4 addresses only.

     -6      Forces telnet to use IPv6 addresses only.

     -8      Specifies an 8-bit data path.  This causes an attempt to negoti-
	     ate the TELNET BINARY option on both input and output.

     -E      Stops any character from being recognized as an escape character.

     -F      If Kerberos V5 authentication is being used, the -F option allows
	     the local credentials to be forwarded to the remote system,
	     including any credentials that have already been forwarded into
	     the local environment.

     -K      Specifies no automatic login to the remote system.

     -L      Specifies an 8-bit data path on output.  This causes the BINARY
	     option to be negotiated on output.

     -N      Prevents IP address to name lookup when destination host is given
	     as an IP address.

     -S tos  Sets the IP type-of-service (TOS) option for the telnet connec-
	     tion to the value tos, which can be a numeric TOS value or, on
	     systems that support it, a symbolic TOS name found in the
	     /etc/iptos file.

     -X atype
	     Disables the atype type of authentication.

     -a      Attempt automatic login.  This is now the default, so this option
	     is ignored.  Currently, this sends the user name via the USER
	     variable of the ENVIRON option if supported by the remote system.
	     The name used is that of the current user as returned by
	     getlogin(2) if it agrees with the current user ID, otherwise it
	     is the name associated with the user ID.

     -c      Disables the reading of the user's .telnetrc file.  (See the
	     toggle skiprc command on this man page.)

     -d      Sets the initial value of the debug toggle to TRUE.

     -e escapechar
	     Sets the initial telnet escape character to escapechar.  If
	     escapechar is omitted, then there will be no escape character.

     -f      If Kerberos V5 authentication is being used, the -f option allows
	     the local credentials to be forwarded to the remote system.

     -k realm
	     If Kerberos authentication is being used, the -k option requests
	     that telnet obtain tickets for the remote host in realm realm
	     instead of the remote host's realm, as determined by
	     krb_realmofhost(3).

     -l user
	     When connecting to the remote system, if the remote system under-
	     stands the ENVIRON option, then user will be sent to the remote
	     system as the value for the variable USER.  This option implies
	     the -a option.  This option may also be used with the open com-
	     mand.

     -n tracefile
	     Opens tracefile for recording trace information.  See the set
	     tracefile command below.

     -r      Specifies a user interface similar to rlogin(1).  In this mode,
	     the escape character is set to the tilde (~) character, unless
	     modified by the -e option.

     -s src_addr
	     Set the source IP address for the telnet connection to src_addr,
	     which can be an IP address or a host name.

     -u      Forces telnet to use AF_UNIX addresses only (e.g., UNIX domain
	     sockets, accessed with a file path).

     -x      Turns on encryption of the data stream if possible.  This is now
	     the default, so this option is ignored.

     -y      Suppresses encryption of the data stream.

     host    Indicates the official name, an alias, or the Internet address of
	     a remote host.  If host starts with a `/', telnet establishes a
	     connection to the corresponding named socket.

     port    Indicates a port number (address of an application).  If a number
	     is not specified, the default telnet port is used.

     When in rlogin mode, a line of the form ~. disconnects from the remote
     host; ~ is the telnet escape character.  Similarly, the line ~^Z suspends
     the telnet session.  The line ~^] escapes to the normal telnet escape
     prompt.

     Once a connection has been opened, telnet will attempt to enable the
     TELNET LINEMODE option.  If this fails, then telnet will revert to one of
     two input modes: either ``character at a time'' or ``old line by line''
     depending on what the remote system supports.

     When LINEMODE is enabled, character processing is done on the local sys-
     tem, under the control of the remote system.  When input editing or char-
     acter echoing is to be disabled, the remote system will relay that infor-
     mation.  The remote system will also relay changes to any special charac-
     ters that happen on the remote system, so that they can take effect on
     the local system.

     In ``character at a time'' mode, most text typed is immediately sent to
     the remote host for processing.

     In ``old line by line'' mode, all text is echoed locally, and (normally)
     only completed lines are sent to the remote host.	The ``local echo char-
     acter'' (initially ``^E'') may be used to turn off and on the local echo
     (this would mostly be used to enter passwords without the password being
     echoed).

     If the LINEMODE option is enabled, or if the localchars toggle is TRUE
     (the default for ``old line by line''; see below), the user's quit, intr,
     and flush characters are trapped locally, and sent as TELNET protocol
     sequences to the remote side.  If LINEMODE has ever been enabled, then
     the user's susp and eof are also sent as TELNET protocol sequences, and
     quit is sent as a TELNET ABORT instead of BREAK.  There are options (see
     toggle autoflush and toggle autosynch below) which cause this action to
     flush subsequent output to the terminal (until the remote host acknowl-
     edges the TELNET sequence) and flush previous terminal input (in the case
     of quit and intr).

     While connected to a remote host, telnet command mode may be entered by
     typing the telnet ``escape character'' (initially ``^]'').  When in com-
     mand mode, the normal terminal editing conventions are available.

     The following telnet commands are available.  Only enough of each command
     to uniquely identify it need be typed (this is also true for arguments to
     the mode, set, toggle, unset, slc, environ, and display commands).

     auth argument ...
		The auth command manipulates the information sent through the
		TELNET AUTHENTICATE option.  Valid arguments for the auth com-
		mand are:

		disable type  Disables the specified type of authentication.
			      To obtain a list of available types, use the
			      auth disable ? command.

		enable type   Enables the specified type of authentication.
			      To obtain a list of available types, use the
			      auth enable ? command.

		status	      Lists the current status of the various types of
			      authentication.

     close	Close a TELNET session and return to command mode.

     display argument ...
		Displays all, or some, of the set and toggle values (see
		below).

     encrypt argument ...
		The encrypt command manipulates the information sent through
		the TELNET ENCRYPT option.

		Valid arguments for the encrypt command are:

		disable type [input | output]
			      Disables the specified type of encryption.  If
			      you omit the input and output, both input and
			      output are disabled.  To obtain a list of avail-
			      able types, use the encrypt disable ? command.

		enable type [input | output]
			      Enables the specified type of encryption.  If
			      you omit input and output, both input and output
			      are enabled.  To obtain a list of available
			      types, use the encrypt enable ? command.

		input	      This is the same as the encrypt start input com-
			      mand.

		-input	      This is the same as the encrypt stop input com-
			      mand.

		output	      This is the same as the encrypt start output
			      command.

		-output       This is the same as the encrypt stop output com-
			      mand.

		start [input | output]
			      Attempts to start encryption.  If you omit input
			      and output, both input and output are enabled.
			      To obtain a list of available types, use the
			      encrypt enable ? command.

		status	      Lists the current status of encryption.

		stop [input | output]
			      Stops encryption.  If you omit input and output,
			      encryption is on both input and output.

		type type     Sets the default type of encryption to be used
			      with later encrypt start or encrypt stop com-
			      mands.

     environ arguments ...
		The environ command is used to manipulate the variables that
		may be sent through the TELNET ENVIRON option.	The initial
		set of variables is taken from the users environment, with
		only the DISPLAY and PRINTER variables being exported by
		default.  The USER variable is also exported if the -a or -l
		options are used.

		Valid arguments for the environ command are:

		define variable value
			    Define the variable variable to have a value of
			    value.  Any variables defined by this command are
			    automatically exported.  The value may be enclosed
			    in single or double quotes so that tabs and spaces
			    may be included.

		undefine variable
			    Remove variable from the list of environment vari-
			    ables.

		export variable
			    Mark the variable variable to be exported to the
			    remote side.

		unexport variable
			    Mark the variable variable to not be exported
			    unless explicitly asked for by the remote side.

		list	    List the current set of environment variables.
			    Those marked with a * will be sent automatically,
			    other variables will only be sent if explicitly
			    requested.

		?	    Prints out help information for the environ com-
			    mand.

     logout	Sends the TELNET LOGOUT option to the remote side.  This com-
		mand is similar to a close command; however, if the remote
		side does not support the LOGOUT option, nothing happens.  If,
		however, the remote side does support the LOGOUT option, this
		command should cause the remote side to close the TELNET con-
		nection.  If the remote side also supports the concept of sus-
		pending a user's session for later reattachment, the logout
		argument indicates that you should terminate the session imme-
		diately.

     mode type	Type is one of several options, depending on the state of the
		TELNET session.  The remote host is asked for permission to go
		into the requested mode.  If the remote host is capable of
		entering that mode, the requested mode will be entered.

		character     Disable the TELNET LINEMODE option, or, if the
			      remote side does not understand the LINEMODE
			      option, then enter ``character at a time'' mode.

		line	      Enable the TELNET LINEMODE option, or, if the
			      remote side does not understand the LINEMODE
			      option, then attempt to enter ``old-line-by-
			      line'' mode.

		isig (-isig)  Attempt to enable (disable) the TRAPSIG mode of
			      the LINEMODE option.  This requires that the
			      LINEMODE option be enabled.

		edit (-edit)  Attempt to enable (disable) the EDIT mode of the
			      LINEMODE option.	This requires that the
			      LINEMODE option be enabled.

		softtabs (-softtabs)
			      Attempt to enable (disable) the SOFT_TAB mode of
			      the LINEMODE option.  This requires that the
			      LINEMODE option be enabled.

		litecho (-litecho)
			      Attempt to enable (disable) the LIT_ECHO mode of
			      the LINEMODE option.  This requires that the
			      LINEMODE option be enabled.

		?	      Prints out help information for the mode com-
			      mand.

     open [-l user] [host] [[-/+]port]
		Open a connection to the named host.  If no port number is
		specified, telnet will attempt to contact a TELNET server at
		the default port.  The host specification may be either a host
		name (see hosts(5)), an Internet address specified in the
		``dot notation'' (see inet(3)), or IPv6 host name or IPv6
		coloned-hexadecimal addreess.  The -l option may be used to
		specify the user name to be passed to the remote system via
		the ENVIRON option.  When connecting to a non-standard port,
		telnet omits any automatic initiation of TELNET options.  When
		the port number is preceded by a minus sign, the initial
		option negotiation is done.  When, however, the port number is
		preceded by a plus sign, any option negotiation and under-
		standing is prohibited, making telnet dumb client for
		POP3/SMTP/NNTP/HTTP-like protocols with any data including
		TELNET IAC character (0xff).  After establishing a connection,
		the file .telnetrc in the users home directory is opened.
		Lines beginning with a # are comment lines.  Blank lines are
		ignored.  Lines that begin without white space are the start
		of a machine entry.  The first thing on the line is the name
		of the machine that is being connected to.  The rest of the
		line, and successive lines that begin with white space are
		assumed to be telnet commands and are processed as if they had
		been typed in manually to the telnet command prompt.

     quit	Close any open TELNET session and exit telnet.	An end of file
		(in command mode) will also close a session and exit.

     send arguments
		Sends one or more special character sequences to the remote
		host.  The following are the arguments which may be specified
		(more than one argument may be specified at a time):

		abort	Sends the TELNET ABORT (Abort processes) sequence.

		ao	Sends the TELNET AO (Abort Output) sequence, which
			should cause the remote system to flush all output
			from the remote system to the user's terminal.

		ayt	Sends the TELNET AYT (Are You There) sequence, to
			which the remote system may or may not choose to
			respond.

		brk	Sends the TELNET BRK (Break) sequence, which may have
			significance to the remote system.

		ec	Sends the TELNET EC (Erase Character) sequence, which
			should cause the remote system to erase the last char-
			acter entered.

		el	Sends the TELNET EL (Erase Line) sequence, which
			should cause the remote system to erase the line cur-
			rently being entered.

		eof	Sends the TELNET EOF (End Of File) sequence.

		eor	Sends the TELNET EOR (End of Record) sequence.

		escape	Sends the current telnet escape character (initially
			``^'').

		ga	Sends the TELNET GA (Go Ahead) sequence, which likely
			has no significance to the remote system.

		getstatus
			If the remote side supports the TELNET STATUS command,
			getstatus will send the subnegotiation to request that
			the server send its current option status.

		ip	Sends the TELNET IP (Interrupt Process) sequence,
			which should cause the remote system to abort the cur-
			rently running process.

		nop	Sends the TELNET NOP (No OPeration) sequence.

		susp	Sends the TELNET SUSP (SUSPend process) sequence.

		synch	Sends the TELNET SYNCH sequence.  This sequence causes
			the remote system to discard all previously typed (but
			not yet read) input.  This sequence is sent as TCP
			urgent data (and may not work if the remote system is
			a 4.2BSD system -- if it doesn't work, a lower case
			``r'' may be echoed on the terminal).

		do cmd

		dont cmd

		will cmd

		wont cmd
			Sends the TELNET DO cmd sequence.  Cmd can be either a
			decimal number between 0 and 255, or a symbolic name
			for a specific TELNET command.	Cmd can also be either
			help or ? to print out help information, including a
			list of known symbolic names.

		?	Prints out help information for the send command.

     set argument value

     unset argument value
		The set command will set any one of a number of telnet vari-
		ables to a specific value or to TRUE.  The special value off
		turns off the function associated with the variable, this is
		equivalent to using the unset command.	The unset command will
		disable or set to FALSE any of the specified functions.  The
		values of variables may be interrogated with the display com-
		mand.  The variables which may be set or unset, but not tog-
		gled, are listed here.	In addition, any of the variables for
		the toggle command may be explicitly set or unset using the
		set and unset commands.

		ayt	If TELNET is in localchars mode, or LINEMODE is
			enabled, and the status character is typed, a TELNET
			AYT sequence (see send ayt preceding) is sent to the
			remote host.  The initial value for the ``Are You
			There'' character is the terminal's status character.

		echo	This is the value (initially ``^E'') which, when in
			``line by line'' mode, toggles between doing local
			echoing of entered characters (for normal processing),
			and suppressing echoing of entered characters (for
			entering, say, a password).

		eof	If telnet is operating in LINEMODE or ``old line by
			line'' mode, entering this character as the first
			character on a line will cause this character to be
			sent to the remote system.  The initial value of the
			eof character is taken to be the terminal's eof char-
			acter.

		erase	If telnet is in localchars mode (see toggle localchars
			below), and if telnet is operating in ``character at a
			time'' mode, then when this character is typed, a
			TELNET EC sequence (see send ec above) is sent to the
			remote system.	The initial value for the erase char-
			acter is taken to be the terminal's erase character.

		escape	This is the telnet escape character (initially ``^['')
			which causes entry into telnet command mode (when con-
			nected to a remote system).

		flushoutput
			If telnet is in localchars mode (see toggle localchars
			below) and the flushoutput character is typed, a
			TELNET AO sequence (see send ao above) is sent to the
			remote host.  The initial value for the flush charac-
			ter is taken to be the terminal's flush character.

		forw1

		forw2	If telnet is operating in LINEMODE, these are the
			characters that, when typed, cause partial lines to be
			forwarded to the remote system.  The initial value for
			the forwarding characters are taken from the termi-
			nal's eol and eol2 characters.

		interrupt
			If telnet is in localchars mode (see toggle localchars
			below) and the interrupt character is typed, a TELNET
			IP sequence (see send ip above) is sent to the remote
			host.  The initial value for the interrupt character
			is taken to be the terminal's intr character.

		kill	If telnet is in localchars mode (see toggle localchars
			below), and if telnet is operating in ``character at a
			time'' mode, then when this character is typed, a
			TELNET EL sequence (see send el above) is sent to the
			remote system.	The initial value for the kill charac-
			ter is taken to be the terminal's kill character.

		lnext	If telnet is operating in LINEMODE or ``old line by
			line'' mode, then this character is taken to be the
			terminal's lnext character.  The initial value for the
			lnext character is taken to be the terminal's lnext
			character.

		quit	If telnet is in localchars mode (see toggle localchars
			below) and the quit character is typed, a TELNET BRK
			sequence (see send brk above) is sent to the remote
			host.  The initial value for the quit character is
			taken to be the terminal's quit character.

		reprint
			If telnet is operating in LINEMODE or ``old line by
			line'' mode, then this character is taken to be the
			terminal's reprint character.  The initial value for
			the reprint character is taken to be the terminal's
			reprint character.

		rlogin	This is the rlogin escape character.  If set, the nor-
			mal telnet escape character is ignored unless it is
			preceded by this character at the beginning of a line.
			This character, at the beginning of a line followed by
			a "." closes the connection; when followed by a ^Z it
			suspends the telnet command.  The initial state is to
			disable the rlogin escape character.

		start	If the TELNET TOGGLE-FLOW-CONTROL option has been
			enabled, then this character is taken to be the termi-
			nal's start character.	The initial value for the
			start character is taken to be the terminal's start
			character.

		stop	If the TELNET TOGGLE-FLOW-CONTROL option has been
			enabled, then this character is taken to be the termi-
			nal's stop character.  The initial value for the stop
			character is taken to be the terminal's stop charac-
			ter.

		susp	If telnet is in localchars mode, or LINEMODE is
			enabled, and the suspend character is typed, a TELNET
			SUSP sequence (see send susp above) is sent to the
			remote host.  The initial value for the suspend char-
			acter is taken to be the terminal's suspend character.

		tracefile
			This is the file to which the output, caused by
			netdata or option tracing being TRUE, will be written.
			If it is set to ``-'', then tracing information will
			be written to standard output (the default).

		worderase
			If telnet is operating in LINEMODE or ``old line by
			line'' mode, then this character is taken to be the
			terminal's worderase character.  The initial value for
			the worderase character is taken to be the terminal's
			worderase character.

		?	Displays the legal set (unset) commands.

     opie sequence challenge
		The opie command computes a response to the OPIE challenge.

     slc state	The slc command (Set Local Characters) is used to set or
		change the state of the special characters when the TELNET
		LINEMODE option has been enabled.  Special characters are
		characters that get mapped to TELNET commands sequences (like
		ip or quit) or line editing characters (like erase and kill).
		By default, the local special characters are exported.

		check	    Verify the current settings for the current spe-
			    cial characters.  The remote side is requested to
			    send all the current special character settings,
			    and if there are any discrepancies with the local
			    side, the local side will switch to the remote
			    value.

		export	    Switch to the local defaults for the special char-
			    acters.  The local default characters are those of
			    the local terminal at the time when telnet was
			    started.

		import	    Switch to the remote defaults for the special
			    characters.  The remote default characters are
			    those of the remote system at the time when the
			    TELNET connection was established.

		?	    Prints out help information for the slc command.

     status	Show the current status of telnet.  This includes the peer one
		is connected to, as well as the current mode.

     toggle arguments ...
		Toggle (between TRUE and FALSE) various flags that control how
		telnet responds to events.  These flags may be set explicitly
		to TRUE or FALSE using the set and unset commands listed
		above.	More than one argument may be specified.  The state of
		these flags may be interrogated with the display command.
		Valid arguments are:

		authdebug     Turns on debugging information for the authenti-
			      cation code.

		autoflush     If autoflush and localchars are both TRUE, then
			      when the ao, or quit characters are recognized
			      (and transformed into TELNET sequences; see set
			      above for details), telnet refuses to display
			      any data on the user's terminal until the remote
			      system acknowledges (via a TELNET TIMING MARK
			      option) that it has processed those TELNET
			      sequences.  The initial value for this toggle is
			      TRUE if the terminal user had not done an "stty
			      noflsh", otherwise FALSE (see stty(1)).

		autodecrypt   When the TELNET ENCRYPT option is negotiated, by
			      default the actual encryption (decryption) of
			      the data stream does not start automatically.
			      The autoencrypt (autodecrypt) command states
			      that encryption of the output (input) stream
			      should be enabled as soon as possible.

		autologin     If the remote side supports the TELNET
			      AUTHENTICATION option telnet attempts to use it
			      to perform automatic authentication.  If the
			      AUTHENTICATION option is not supported, the
			      user's login name are propagated through the
			      TELNET ENVIRON option.  This command is the same
			      as specifying -a option on the open command.

		autosynch     If autosynch and localchars are both TRUE, then
			      when either the intr or quit characters is typed
			      (see set above for descriptions of the intr and
			      quit characters), the resulting TELNET sequence
			      sent is followed by the TELNET SYNCH sequence.
			      This procedure should cause the remote system to
			      begin throwing away all previously typed input
			      until both of the TELNET sequences have been
			      read and acted upon.  The initial value of this
			      toggle is FALSE.

		binary	      Enable or disable the TELNET BINARY option on
			      both input and output.

		inbinary      Enable or disable the TELNET BINARY option on
			      input.

		outbinary     Enable or disable the TELNET BINARY option on
			      output.

		crlf	      If this is TRUE, then carriage returns will be
			      sent as .  If this is FALSE, then car-
			      riage returns will be send as .	The
			      initial value for this toggle is FALSE.

		crmod	      Toggle carriage return mode.  When this mode is
			      enabled, most carriage return characters
			      received from the remote host will be mapped
			      into a carriage return followed by a line feed.
			      This mode does not affect those characters typed
			      by the user, only those received from the remote
			      host.  This mode is not very useful unless the
			      remote host only sends carriage return, but
			      never line feed.	The initial value for this
			      toggle is FALSE.

		debug	      Toggles socket level debugging (useful only to
			      the super user).	The initial value for this
			      toggle is FALSE.

		encdebug      Turns on debugging information for the encryp-
			      tion code.

		localchars    If this is TRUE, then the flush, interrupt,
			      quit, erase, and kill characters (see set above)
			      are recognized locally, and transformed into
			      (hopefully) appropriate TELNET control sequences
			      (respectively ao, ip, brk, ec, and el; see send
			      above).  The initial value for this toggle is
			      TRUE in ``old line by line'' mode, and FALSE in
			      ``character at a time'' mode.  When the LINEMODE
			      option is enabled, the value of localchars is
			      ignored, and assumed to always be TRUE.  If
			      LINEMODE has ever been enabled, then quit is
			      sent as abort, and eof and suspend are sent as
			      eof and susp (see send above).

		netdata       Toggles the display of all network data (in
			      hexadecimal format).  The initial value for this
			      toggle is FALSE.

		options       Toggles the display of some internal telnet pro-
			      tocol processing (having to do with TELNET
			      options).  The initial value for this toggle is
			      FALSE.

		prettydump    When the netdata toggle is enabled, if
			      prettydump is enabled the output from the
			      netdata command will be formatted in a more user
			      readable format.	Spaces are put between each
			      character in the output, and the beginning of
			      any telnet escape sequence is preceded by a '*'
			      to aid in locating them.

		skiprc	      When the skiprc toggle is TRUE, telnet skips the
			      reading of the .telnetrc file in the users home
			      directory when connections are opened.  The ini-
			      tial value for this toggle is FALSE.

		termdata      Toggles the display of all terminal data (in
			      hexadecimal format).  The initial value for this
			      toggle is FALSE.

		verbose_encrypt
			      When the verbose_encrypt toggle is TRUE, telnet
			      prints out a message each time encryption is
			      enabled or disabled.  The initial value for this
			      toggle is FALSE.

		?	      Displays the legal toggle commands.

     z		Suspend telnet.  This command only works when the user is
		using the csh(1).

     ! [command]
		Execute a single command in a subshell on the local system.
		If command is omitted, then an interactive subshell is
		invoked.

     ? [command]
		Get help.  With no arguments, telnet prints a help summary.
		If command is specified, telnet will print the help informa-
		tion for just that command.

ENVIRONMENT
     telnet uses at least the HOME, SHELL, DISPLAY, and TERM environment vari-
     ables.  Other environment variables may be propagated to the other side
     via the TELNET ENVIRON option.

FILES
     ~/.telnetrc  user customized telnet startup values

SEE ALSO
     rlogin(1), rsh(1), hosts(5), nologin(5), telnetd(8)

HISTORY
     The telnet command appeared in 4.2BSD.

     IPv6 support was added by WIDE/KAME project.

NOTES
     On some remote systems, echo has to be turned off manually when in ``old
     line by line'' mode.

     In ``old line by line'' mode or LINEMODE the terminal's eof character is
     only recognized (and sent to the remote system) when it is the first
     character on a line.

FreeBSD 6.1		       January 27, 2000 		   FreeBSD 6.1
=19047
+365
(74)