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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:

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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THE TECHNO CLUB [ TECHNOWORLDINC.COM ] => Shell Script => Topic started by: Mark David on March 16, 2007, 01:33:58 PM