UNIX for Dummies Questions & Answers

Hi,

I need an alert to be triggered if any filesystem(imagine there are n no of filesystems) reaches more than 90%, it should send an alert to the mailbox stating which filesystem is at what percentage. How can I achieve this in unix?

Many thanks.

Either by using cron and custom home scripts, or using monitoring tools available...
There are a few open source out there e.g:
About Big Sister

MRTG NAGIOS etc...

Thanks Vbe!!!

And how can we achieve through unix shell scripting?

The command and output format for disc space enquiries varies.

Please state what Operating System you have , what Shell language you prefer (not "csh") and show a sample command and output.

There is much variation in email commands, notably in the syntax for commonly used commands such as "mailx". Please show a sample email command which works (changing anything confidential like the actual email address).

OS which I use Linux and the shell is bash. mail command is working and the sample e-mail id: venkatesh.t@in.xx.com

Desired Output:
---------------

If any filesystem crosses more than 90%, it should send an e-mail alert to the e-mail id specified.

... and the sample command you use to find out free disc space and sample output from that command?

df is the sample command and here is the output:

Code:

Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/hd4
                       1032088    263272    716388  27% /
/dev/appl
                      15126920   7612436   6746076  54% /appl