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Shell: check whether a variable contains certain string or not
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| # to check whether TEST_OPTIONS contains "-P" or "--parallel", or not | |
| # TEST_OPTIONS can be "-P 20", "--parallel=15", or any string | |
| if [[ "$TEST_OPTIONS" == -P* ]] || [[ "$TEST_OPTIONS" == --paralell* ]]; then echo "yes"; else echo "no"; fi |
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