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/ifte.html | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 doc/ifte.html (limited to 'doc/ifte.html') diff --git a/doc/ifte.html b/doc/ifte.html new file mode 100644 index 0000000..40b0ec9 --- /dev/null +++ b/doc/ifte.html @@ -0,0 +1,67 @@ + + + + + execline: the ifte command + + + + + + +

+execline
+Software
+skarnet.org +

+ +

The `ifte` program

+ +

+ifte performs a conditional alternative. +

+ +

Interface

+ +

+ In an execlineb script: +

+ +

+     ifte [ -X ] [ -n ] { progthen... } { progelse... } progif...
+

+ +

ifte reads progthen... and progelse... in two +consecutive blocks.
ifte runs progif... as a child process +and waits for it to complete.
If progif... crashes (i.e. is killed by a signal), ifte +exits 1 with an error message.
If progif... exits zero, ifte execs into +progthen..., else it execs into progelse....

+ +

Options

+ +

-X : do not exit if progif crashes; instead, +proceed as if the test had returned false.
-n : negate the test. progthen... will be run +iff progif... exits nonzero.

+ +

Notes

+ +

+ ifte is a simpler version of ifthenelse. +It performs only conditional execution, not instruction sequence. +

+ +

+"ifthenelse { progif } { progthen } { progelse } remainder" is the +equivalent of "foreground { ifte { progthen } { progelse } progif } remainder". +

+ + + -- cgit v1.2.3

The ifte program

Interface

Options

Notes

The `ifte` program