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hliang/gist:56862e0277a7ce1ea7d6

Created August 22, 2014 22:05
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Condition evaluation of command output
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gistfile1.txt
# condition evaluation of command output
# e.g.
# keep checking whether a file contains PATTERN string
while [[ $(grep -c 'PATTERN' test.txt) == 1 ]]; do echo test.txt contains PATTERN ; date; sleep 2; done
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