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/ifelse.html | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 doc/ifelse.html (limited to 'doc/ifelse.html') diff --git a/doc/ifelse.html b/doc/ifelse.html new file mode 100644 index 0000000..2298cf8 --- /dev/null +++ b/doc/ifelse.html @@ -0,0 +1,59 @@ + + + + + execline: the ifelse command + + + + + + +

+execline
+Software
+skarnet.org +

+ +

The `ifelse` program

+ +

+ ifelse performs conditional execution, with two branches. +

+ +

Interface

+ +

+ In an execlineb script: +

+     ifelse [ -X ] [ -n ] { prog1... } { prog2... } prog3...
+

+ +

ifelse reads prog1... in a +block. It forks and executes it, +then waits for it to complete.
If prog1 crashes, ifelse exits 1 with an error message.
If prog1 exits with a return code equal to 0, +ifelse execs into prog2.
Else ifelse execs into prog3.

+ +

Options

+ +

-n : negate the test.
-X : do not die if prog1 crashes; treat a crash +as a non-zero ("false") exit.

+ +

Notes

+ +

ifelse prog1... "" prog2... "" prog3... is +roughly equivalent to sh -c 'prog1... && exec prog2... || exec prog3...'.

+ + + -- cgit v1.2.3

The ifelse program

Interface

Options

Notes

The `ifelse` program