From f316a2ed52195135a35e32d7096e876357c48c69 Mon Sep 17 00:00:00 2001 From: Laurent Bercot Date: Thu, 18 Sep 2014 20:03:23 +0000 Subject: initial commit: rc for execline-2.0.0.0 --- doc/loopwhilex.html | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 doc/loopwhilex.html (limited to 'doc/loopwhilex.html') diff --git a/doc/loopwhilex.html b/doc/loopwhilex.html new file mode 100644 index 0000000..9def60f --- /dev/null +++ b/doc/loopwhilex.html @@ -0,0 +1,60 @@ + + + + + execline: the loopwhilex command + + + + + + +

+execline
+Software
+skarnet.org +

+ +

The `loopwhilex` program

+ +

+loopwhilex performs a conditional loop. +

+ +

Interface

+ +

+     loopwhilex [ -n ] [ -x exitcodes ] prog...
+

+ +

loopwhilex runs prog... as a child process and +waits for it to complete.
As long as prog exits zero, loopwhile runs it again.
loopwhilex then exits 0. If prog was killed by a signal, +loopwhilex exits that signal's number instead.

+ +

Options

+ +

-x exitcodes : exitcodes must be a comma-separated +list of valid exit codes. If this option is given, loopwhilex will exit if prog...'s +exit code is listed in breakcodes.
-n : negate the test: run prog... as long as it exits non-zero +(or exits a code that is not listed in breakcodes).

+ +

Notes

+ +

loopwhilex prog... is equivalent to loopwhilex -n -x 0 prog....
Be careful: execline maintains no state, in particular it +uses no real variables, and environment will +be of no use here since every instance of prog... runs as a separate +child process. To avoid being stuck in an infinite loop, prog... +should modify some external state - for instance, the filesystem.

+ + + -- cgit v1.3.1

The loopwhilex program

Interface

Options

Notes

The `loopwhilex` program