sed-example.org 327 B
echo 'abc :results output :eval no' | sed -E 's#.*(results [[:alnum:]]{1,}).*#\1#'
This demonstrates the following uses of GNU sed:
- Extended regexps
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-E - Substitution
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s#OLD#NEW# - Character classes
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[[:alnum:]] - "bounds"
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{1,0}(could be+) - replacement
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s#(FOO)#\1#