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Mark David

March 16, 2007, 08:03:58 AM
Bourne/bash shell scripts: if statement syntax

Conditional expressions give programs life. The ability to branch makes shell scripts powerful. This recipe shows the basic if then else structure for sh, ksh, bash, zsh, etc.

Code Select
if [ condition_A ]
then
   code to run if condition_A true
elif [ condition_B ]
then
   code to run if condition_A false and condition_B true
else
   code to run if both conditions false
fi

Multiple elif blocks can be strung together to make an elaborate set of conditional responses.
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Bourne/bash shell scripts: if statement syntax

Started by Mark David, March 16, 2007, 08:03:58 AM

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