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PPPCTL(8) OpenBSD System Manager's Manual PPPCTL(8)
pppctl - PPP control program
pppctl [-v] [-t n] [-p passwd] [host:]Port | LocalSocket
This program provides command line control of the ppp(8) daemon. Its
primary use is to facilitate simple scripts that control a running dae-
Pppctl is passed at least one argument, specifying the socket on which
ppp is listening. Refer to the `set server' command of ppp for details.
If the socket contains a leading '/', it is taken as an AF_LOCAL socket.
If it contains a colon, it is treated as a host:port pair, otherwise it
is treated as a TCP port specification on the local machine (127.0.0.1).
Both the host and port may be specified numerically if you wish to avoid
a DNS lookup or don't have an entry for the given port in /etc/services.
All remaining arguments are concatenated to form the command(s) that will
be sent to the ppp daemon. If any semi-colon characters are found, they
are treated as command delimiters, allowing more than one command in a
given `session'. For example:
pppctl 3000 set timeout 300\; show timeout
Don't forget to escape or quote the ';' as it is a special character for
If no command arguments are given, pppctl enters interactive mode, where
commands are read from standard input. When reading commands, the edit-
line(3) library is used, allowing command-line editing (with editrc(5)
defining editing behaviour). The history size defaults to 20 lines.
The following command line options are available:
-v Display all data sent to and received from the ppp daemon. Nor-
mally, pppctl displays only non-prompt lines received. This op-
tion is ignored in interactive mode.
-t n Use a timeout of n instead of the default 2 seconds when connect-
ing. This may be required if you wish to control a daemon over a
slow (or even a dialup) link.
Specify the password required by the ppp daemon. If this switch
is not used, pppctl will prompt for a password once it has suc-
cessfully connected to ppp.
If you run ppp in -auto mode, pppctl can be used to automate many fre-
quent tasks (you can actually control ppp in any mode except interactive
mode). Use of the -p option is discouraged (even in scripts that aren't
readable by others) as a ps(1) listing may reveal your secret.
The best way to allow easy, secure pppctl access is to create a local
server socket in /etc/ppp/ppp.conf (in the correct section) like this:
set server /var/run/internet "" 0177
This will instruct ppp to create a local domain socket, with srw-------
permissions and no password, allowing access only to the user that in-
voked ppp. Refer to the ppp(8) man page for further details.
You can now create some easy-access scripts. To connect to the internet:
test $# -eq 0 && time=300 || time=$1
exec pppctl /var/run/internet set timeout $time\; dial
exec pppctl /var/run/internet set timeout 300\; close
To check if the line is up:
pppctl -p '' -v /var/run/internet quit | grep ^PPP >/dev/null
if [ $? -eq 0 ]; then
echo Link is up
echo Link is down
You can even make a generic script:
exec pppctl /var/run/internet "$@"
The following environment variables are understood by pppctl when in in-
EL_SIZE The number of history lines. The default is 20.
EL_EDITOR The edit mode. Only values of "emacs" and "vi" are accepted.
Other values are silently ignored. This environment variable
will override the bind -v and bind -e commands in ~/.editrc.
editline(3), editrc(5), ppp(8), ps(1), services(5)
The pppctl command first appeared in FreeBSD 2.2.5.
OpenBSD 26 June 1997 2
Source: OpenBSD 2.6 man pages. Copyright: Portions are copyrighted by BERKELEY
SOFTWARE DESIGN, INC., The Regents of the University of California, Massachusetts
Institute of Technology, Free Software Foundation, FreeBSD Inc., and others.
(Corrections, notes, and links courtesy of RocketAware.com)
FreeBSD Sources for pppctl(8)
OpenBSD sources for pppctl(8)
Up to: Communication Implementation - low level implementation, multicast, ppp, slip, wrappers,firewalls, et al
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