What does this do in bash: ${pid:-} Post: 302246003

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LEARN ABOUT DEBIAN

al-session-daemon

ALBATROSS(8)						      System Manager's Manual						      ALBATROSS(8)

NAME

       al-session-daemon -- session daemon for Albatross web applications

SYNOPSIS

       al-session-daemon [-D, --debug]	[-h, --help]  [-k, --pidfile pid-file]	[-p, --port port]  [-l, --log log-file]  [command]

DESCRIPTION

       This manual page documents briefly the al-session-daemon command.

       This manual page was written for the Debian distribution because the original program does not have a manual page.

       al-session-daemon  is  a  daemon that implements a session server for Albatross web applications. It can store simple pieces of information
       for later retrieval. With the help of this daemon, you can distribute your Albatross web application across several web servers	and  store
       the sessions in one place.

OPTIONS

       A summary of options is included below.

       -D	    --debug
		 Write debugging to log.

       -h	    --help
		 Display program help.

       -k     --pidfile
		 Record server pid in pid-file, default is /var/run/al-session-daemon.pid.

       -p     --port
		 Listen on port, default is 34343.

       -l     --log
		 Write log to log-file, default is /var/log/al-session-daemon.log.

AUTHOR

       This  manual page was written by Fabian Fagerholm fabbe@debian.org for the Debian system (but may be used by others). Permission is granted
       to redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation;  either
       version 2 of the License, or (at your option) any later version.

																      ALBATROSS(8)

10 More Discussions You Might Find Interesting

1. Programming

printing ppid,child pid,pid

Discussion started by: a25khan

2. Shell Programming and Scripting

how to get PID only

Discussion started by: kotasateesh

3. Shell Programming and Scripting

PID in BASH

Discussion started by: rayne

4. UNIX for Dummies Questions & Answers

Session PID & socket connection pid

Discussion started by: pcx26