Bash : find days in previous month

March 29, 2010 at 3:59 pm · Filed under Technology ·Tagged bash, date, days in previous month, ksh

Here is a one liner to find the number of days in previous month (works in bash and KSH)

cal $((`date '+%m'`-1)) `date '+%Y'` | grep . | fmt -1 | tail -1

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