Tech-Recipes - Latest Comments in csh/C shell scripts: if statement syntax

Re: csh/C shell scripts: if statement syntax

Chisim_obi — Wed, 23 Mar 2011 11:50:45 -0000

need more examples

Chisimobi — Wed, 23 Mar 2011 11:50:00 -0000

need more examples

Paul — Mon, 14 Dec 2009 10:23:12 -0000

Almost? More like completely...

Dan — Wed, 11 Mar 2009 16:53:34 -0000

A variation of the above would be:

if ( ! ${?LD_LIBRARY_PATH} ) then
setenv LD_LIBRARY_PATH /usr/lib
endif

Use the {} around variables as a habit since the variable names can often interfere with shell syntax.

The semicolon at the end is ignored.

Dan — Wed, 11 Mar 2009 16:51:14 -0000

Without concrete examples of how the syntax is actually used, this is almost useless information.

Dan — Fri, 07 Nov 2008 13:08:25 -0000

test for the existence of a variable using
if ($?LD_LIBRARY_PATH == 0) then
setenv LD_LIBRARY_PATH /usr/lib;
endif