add if loop

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onceupon 2018-12-19 17:59:27 +08:00 committed by GitHub
parent 934f793da8
commit 89c34e4347
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@ -899,6 +899,10 @@ else
echo >&2 "Fatal error. This script requires mydir."
fi
# if variable is null
if [ ! -s "myvariable" ]
#True of the length if "STRING" is zero.
# Test if file exist
if [ -e 'filename' ]
then