topic Re: verif disk usage in Operating System - Linux

verif disk usage

iranzo — Wed, 25 May 2011 11:16:42 GMT

Hello,
i look for script to verify disk usage
on linux server,
i start with ' df -H | grep -vE '^Filesystem|tmpfs|cdrom '
but now i want to extract just
pattern with a "%" in line,
like "13%" for example.
Thanks a lot

Re: verif disk usage

Matti_Kurkela — Wed, 25 May 2011 12:42:58 GMT

If I understood correctly what you're looking for, you want just the Use% part of each line.
It's the 5th whitespace-separated "word" on the line, so awk can pick it out nicely.

However, some versions of df will add a line feed after the device name if the name is so long it would push the columns out of alignment. To avoid this, add option -P to the df command:

df -PH | grep -vE '^Filesystem|tmpfs|cdrom ' | awk '{ print $5; }'

You can even pick multiple columns, in any order you wish. For example, to output the name of the mount point and its Use% value only:

df -PH | grep -vE '^Filesystem|tmpfs|cdrom ' | awk '{ print $6, $5; }'

MK

Re: verif disk usage

Lucifer Megacruel — Wed, 25 May 2011 14:44:47 GMT

Hi,

You can also make use of python, use the os module ( i need to search for the exact function), search the python documentation. Then you can generate reports, make a cool ui etc

I prefer python over traditional shell scripts since python scripts tend to be more maintainable. But that's just me!.

--Lucifer

Re: verif disk usage

Wilfred Chau_1 — Fri, 27 May 2011 16:33:31 GMT

df -HP|awk '{if (NR!=1 && $5 == "13%") print $6 "\t" $5}'

This will output the filesystem and its usage only if the usage is exactly 13%.

Is this something you need?