This program simply gets one or more commands separated by the pipe symbol "|" as arguments. When called from a shell command line or in any situation, where the whole command is interpreted by a shell, the bar "|" has to be escaped from interpretation, either by preceding
it with a backslash "
This program is part of afbackup-client
The arguments are chained (separated by single spaces each) and then separated at word boundaries.
If an argument should contain whitespace, it must be double-quoted. The whole command pipeline may be put into one single argument, so in a shell the following is ok:
__piper 'echo "Hello lots of space" | sed "s/ts of/st in/g"'
Double quotes, the pipe symbol and the backslash itself may be escaped by a preceding backslash "The advantage using this program instead of a shell with the -c option should be a much faster startup of the whole pipeline.
This is useful in the process- and uncrosses commands of the client side of afbackup.
This manual page was written by Rene Mayorga <email@example.com> for
the Debian system (but may be used by others). Permission is
granted to copy, distribute and/or modify this document under
the terms of the GNU General Public License, Version 2 any later version published by the Free Software Foundation.
On Debian systems, the complete text of the GNU General Public
License can be found in /usr/share/common-licenses/GPL.