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How to know AGE of a file

12 New Member

I have a file... how to know that file is 10 days old. In other words... want to check a file whether it NOT touched for modifications since 10 days.

I want to use in korn shell script.

Thanks in advance.
Mar 15 '07 #1
5 13576
534 Recognized Expert Contributor
ls -l displays the time of the last modification.

If you need to programmaticall y collect files based upon the last mod. time look at the UNIX find command, and specifically at the-mtime option.
Mar 16 '07 #2
12 New Member
thank you.
Mar 19 '07 #3
1 New Member
To calculate the age of a file, e.g. within another script, it can be a little tricky to use only the present date and long listing of the file, as the date might have changed / the month / the year, etc.
Then it is handy to use Epoch Time (seconds since New Year 1970)
and compute the difference between the present E.T. and E.T. of the modification of the file, like this

tnow=`date +%s`
tfile=`date +%s -r filename`
agesecs=$(($tno w-$tfile)) #Age of filename in seconds
ageminutes=$(($ agesecs/60)) #Age in minutes
May 29 '07 #4
Nick Keeman
4 New Member
I Like the post of thescripter75 but it will only work in 'Linux' for most other Unix flavours this won't work as they are ages behind.


Jun 13 '07 #5
1 New Member
It works on HPUX B.11.23 or higher
Mar 8 '10 #6

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