BASH. How check file size ?

rbalaa · 03-25-2010, 01:30 PM

Hi All,

Can someoen help me with a script that will check if my log file is a certain size ? EX: I want to limit the size of my rsync log to say 5MB, if that's true I would move it and create a new one.

Thank you in advance.

smeezekitty · 03-25-2010, 01:47 PM

du -m <filename> | awk '{ print $1 }' -
Returns the file size in megabytes on stdout.

djsmiley2k · 03-25-2010, 01:50 PM

log rotate can be made to do this for you, along with compressing and archiving old logs - I couldn't find the "offical" site as I got mine from gentoo but - http://www.linuxconfig.org/logrotate explains it.

Or are you doing this to learn? If so then I'm afraid all I know is

Code:

du /path/to.file

will give you the size of the file (Normally in Kb I think but it can be changed, for example `du -h` gives you a nice human readable size).

(This is my first helpful post, Hope its ok!).

PMP · 03-26-2010, 04:56 AM

stat <filename>

look for "man stat" for more options

rbalaa · 03-26-2010, 07:22 AM

Thanks. I used stat -c %s "filename" , it worked perfectly.

FILESIZE=$(stat -c %s "filename")