I am new to scripting and need help on writing a script that sends an email message on disk usage, can some help me to understand the basics and how to write this.
Please help me.
Create a script sends an email message to the user specified on the command line if any of the filesystems at more than 70% of capacity. The script should not process special filesystems as /proc. It should only process filesystems which are either locally mounted or are mounted via NFS.
An individual email should be sent for each filesystem which is at the warning level. There should be a subject on the email with a message "Warning: Filesystem <put filesystem the>here is at <X>% of capacity" If the filesystem is at greater than 90% of capacity, the "Warning" should be changed to "Critical Warning".
You may use any scripting language including /bin/sh, ksh, bash, awk or perl. Work done in the C-Shell (csh) will not be accepted.