On Sep 11, 3:52 pm, Cyrus Kriticos <cyrus.kriti...@googlemail.com>
wrote:
> littleh...@gmail.com wrote:
> > I am trying to put together a script to compare the dates of a file
> > and send out an email notification if the date on the file is beyond
> > 30 calendar days. However, I am having a bit of trouble. The file
> > format is <filename>_%m%d%y. So for example
> > foobar1_090207
> > foorbar2_090307
> > foorbar3_091507
>
> ^^
> future? typo?
>
> > I parse the file so I am just left with the date extension from
> > there I want to be notified of any file over the 30 day mark.
>
> > I tried using expr and setting up a variable for the 30 days but its
> > not working. Any would be appreciated. Thanks.
>
> [bash]
>
> $ FILENAME="foobar1_090207"
> $ TIME="${FILENAME#*_}"
>
> $ PAST="$(date -d "20${TIME:4:2}-${TIME:0:2}-${TIME:2:2}" +'%s')"
> $ NOW=$(date -d $(date +'%Y-%m-%d') +'%s')
>
> $ let DIFF=(NOW-PAST)/60/60/24
> $ echo "diff in days: $DIFF"
> diff in days: 9
>
> --
> Best regards | "The only way to really learn scripting is to write
> Cyrus | scripts." -- Advanced Bash-Scripting Guide

Quick question- are you using Solaris? I don;t have the '-d' flag for
the format.