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On Solaris, without stat, how to check how old a file is?

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# 1  
On Solaris, without stat, how to check how old a file is?


How do I check how old a file is? That is, is it 1 day old, 1 year old, generated x hours ago?

Currently, I receive a supposed to be daily report and in the last few times, it has not been recent, that is instead of the one generated for the day, it is one that was created yesterday or older.

I want to write a script to be able to check how old a file is or when it was generated. I am doing the check at the moment using ls -l and comparing the date to today's date. Alternatively, as a workaround I am telling the user to put a date timestamp on the file and I check that timestamp in the file.

Any advice will be much appreciated. Thanks.
# 2  
Like your other question about ls, check out the options of the find command.

Though keep in mind, there is no time stamp stored for the creation of a file.
There is only mtime (modification), ctime (change), atime (access).

Detailed info about this is here:
mtime, ctime, and atime
# 3  
Modern filesystems (eg, ZFS) do indeed record file creation date/time.

What Solaris filesystem type are you talking about?

Read this thread from this forum:

Particularly read the superb post by jlliagre.

Hope that helps.

Last edited by hicksd8; 07-18-2014 at 11:00 AM..
This User Gave Thanks to hicksd8 For This Post:
# 4  
Normally you take the mtime.
touch -t timestamp reffile

you can compare with
find ... -newer reffile

test `ls -t yourfile reffile | head -1` = reffile

Or you use stat() in perl.

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