Cpu utilization by a process has to be mailed if more than 5% on AIX

Shell Programming and Scripting
1

i am using the below command in order to find the cpu utilization by a user..now i want to mail if the cpu utilization goes beyond 5%....can someone please help me ?

ps auxw | sort -r +2 | awk '{ print $3,$1 }' | head -6 | egrep "USER|#anonymous#"
 
%CPU USER
2.0 anonymous

Regards,
Priyank Arora

2

You can simplify it a bit:

ps auxw | sort -r +2 | awk 'BEGIN{print "%CPU","USER"}/anonymous/&&$3>5.0{print $3,$1}' > mail_body

[ -s mail_body ] && mail -s "%CPU > 5.0" < mail_body
3

thanks a lot...:slight_smile:

Could you please explain the "> mail_body " section.

i mean do i need to define a variable with the name mail_body ?

or please tell me how to do it if i want to mail it to anonymous@example.com.

Thanks in Advance.

4

> mail_body means the output is redirected to a file named: mail_body

In the 2nd step, the if statement is used to check if the file size is greater than zero and send mail if true.

By the way I missed the recipient, it should be:

[ -s mail_body ] && mail -s "Subject" anonymous@example.com < mail_body
5

you mean

[ -s mail_body ]

checks the size of the file ?

And if i want add a few more lines in the mail then ?

should i create a file mail_body in the beginning of the script and put the content in there ?

for ex. "The Following Process is utilizing High CPU"

Thanks

6

Yes. [ -s mail_body ] condition is true when the file size is greater than zero.

For further reference check: Expressions used with if

To add a statement to beginning you can use grouping command form and pipe output to mail:

if [ -s mail_body ]
then
        {
                echo "Following Processes are utilizing High CPU"
                cat mail_body
        } | mail -s "Subject" anonymous@example.com
fi
7

Don't print header-only:

ps aux | sort -r +2 | awk '$2=="anonymous" && $3>5.0 {if (f++==0) print "%CPU","USER"; print $3,$1}' > mail_body
[ -s mail_body ] &&
{
 echo "extra text"
 cat mail_body
} |
 mail -s "%CPU > 5.0" anonymous@example.com