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23 lines
659 B
Text
23 lines
659 B
Text
\section if if - Conditionally execute a command
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\subsection if-synopsis Synopsis
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<tt>if CONDITION; COMMAND_TRUE [else; COMMAND_FALSE] end;</tt>
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\subsection if-description Description
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<tt>if</tt> will execute the command CONDITION. If the commands exit
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status is zero, the command COMMAND_TRUE will execute. If it is
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not zero and COMMAND_FALSE is specified, COMMAND_FALSE will be
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executed.
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\subsection if-example Example
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<pre>
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if test -f foo.txt
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echo foo.txt exists
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else
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echo foo.txt does not exist
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end
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</pre>
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will print <tt>foo.txt exists</tt> if the file foo.txt
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exists and is a regular file, otherwise it will print
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<tt>foo.txt does not exist</tt>.
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