Returns last day of current month

cal | egrep -e '^ [0-9]|^[0-9]' | tr '\n' ' ' | awk '{print $NF}'
Returns last day of current month. Useful to implement a bash script backup based on a GFS strategy.
Sample Output
$  cal | egrep -e '^ [0-9]|^[0-9]' | tr '\n' ' ' | awk '{print $NF}'
30

0
By: gouverney
2012-04-16 11:58:09

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