slattach(8) — Linux manual page


SLATTACH(8)        Linux System Administrator's Manual       SLATTACH(8)

NAME         top

       slattach - attach a network interface to a serial line

SYNOPSIS         top

       slattach [-dehlLmnqv] [-c command] [-p proto] [-s speed] [tty]

DESCRIPTION         top

       Slattach is a tiny little program that can be used to put a
       normal terminal ("serial") line into one of several "network"
       modes, thus allowing you to use it for point-to-point links to
       other computers.

OPTIONS         top

       tty    Path to a serial device like /dev/ttyS*, /dev/cua* or
              /dev/ptmx to spawn a new pseudo tty.

       [-c command]
              Execute command when the line is hung up. This can be used
              to run scripts or re-establish connections when a link
              goes down.

       [-d]   Enable debugging output.  Useful when determining why a
              given setup doesn't work.

       [-h]   Exit when the carrier is lost. This works on both /dev/tty
              and /dev/cua devices by directly monitoring the carrier
              status every 15 seconds.

       [-v]   Enable verbose output.  Useful in shell scripts.

       [-q]   Operate in quiet mode - no messages at all.

       [-l]   Create an UUCP-style lockfile for the device in /var/lock.

       [-n]   Equivalent to the "mesg n" command.

       [-m]   Do not initialize the line into 8 bits raw mode.

       [-e]   Exit right after initializing device, instead of waiting
              for the line to hang up.

       [-L]   Enable 3 wire operation. The terminal is moved into CLOCAL
              mode, carrier watching is disabled.

       [-p proto]
              Set a specific kind of protocol to use on the line.  The
              default is set to cslip, i.e. compressed SLIP.  Other
              possible values are slip (normal SLIP), adaptive (adaptive
              CSLIP/SLIP), ppp (Point-to-Point Protocol) and kiss (a
              protocol used for communicating with AX.25 packet radio
              terminal node controllers).  The special argument tty can
              be used to put the device back into normal serial
              operation.  Using 'ppp' mode is not normally useful as ppp
              requires an additional ppp daemon pppd to be active on the
              line. For kiss connections the kissattach program should
              be used.

       [-s speed]
              Set a specific line speed, other than the default.

       If no arguments are given, the current terminal line (usually:
       the login device) is used.  Otherwise, an attempt is made to
       claim the indicated terminal port, lock it, and open it.

FILES         top

       /dev/cua* /var/lock/LCK.* /dev/ttyS* /dev/ptmx

BUGS         top

       None known.

SEE ALSO         top

       kissattach(8), dip(8), pppd(8), sliplogin(8)

AUTHORS         top

       Fred N. van Kempen, <>
       Alan Cox, <>
       Miquel van Smoorenburg, <>
       George Shearer, <>
       Yossi Gottlieb, <>

COLOPHON         top

       This page is part of the net-tools (networking utilities)
       project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for
       this manual page, see ⟨⟩.  This
       page was obtained from the project's upstream Git repository
       ⟨git://⟩ on 2023-12-22.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2023-06-29.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
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       (which is not part of the original manual page), send a mail to

net-tools                      2011-12-31                    SLATTACH(8)