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If your version of grep supports coloring matches, you can use the following to give a calendar with the current date colored:

cal | grep --color=auto -E  \(\ \|^\)$(date +%e)\(\ \|\$\)\|\$


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AdrianTM
It worked, but now I get this:
grep: 2( |$)|$: No such file or directory

Why?
Posted 2009-01-03 00:27:37

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