CODEWITHSUNDEEP
shell
apr
apr

Reputation: 696

Not found Error while running shell script

I have written a shell script given below

unicorn_cnt=$(ps -ef | grep -v grep | grep -c unicorn)
if (( $unicorn_cnt == 0 )); then
 echo "Unicorn Stopped" | mail -s "Alert - Unicorn" [email protected]
fi
delayed_job_cnt=$(ps -ef | grep -v grep | grep -c delayed_job)
if (( $delayed_job_cnt == 0 )); then
 echo "Delayed Job Stopped" | mail -s "Alert - Unicorn" [email protected]
fi
rake_cnt=$(ps -ef | grep -v grep | grep -c rake)
if (( $rake_cnt == 0 )); then
  echo "Convertion Stopped" | mail -s "Alert - Unicorn" [email protected]
fi

This is for checking, is the processes is running, if not send an alert mail. I am not much familiar with shell scripts. While running It shows following error.

process.sh: 3: process.sh: 2: not found
process.sh: 7: process.sh: 0: not found
process.sh: 11: process.sh: 0: not found

From some research I partially understands, this is because space problem while creating variable. Not sure. And I tried to use some solutions like sed and read. But still it showing the error. Can anyone help me.

Thanks Regards

Upvotes: 0

Views: 5067

Answers (3)

apr
apr

Reputation: 696

From the above tip I found my answer.

unicorn_cnt=$(ps -ef | grep -v grep | grep -c unicorn)
if [ $unicorn_cnt -eq 0 ]; 
then
  echo "Unicorn Stopped" | mail -s "Alert - Unicorn" [email protected]
fi
delayed_job_cnt=$(ps -ef | grep -v grep | grep -c delayed_job)
if [ $delayed_job_cnt -eq 0 ]; 
then
  echo "Delayed Job Stopped" | mail -s "Alert - Delayed Job" [email protected]
fi
rake_cnt=$(ps -ef | grep -v grep | grep -c rake)
if [ $rake_cnt -eq 0 ]; 
then
  echo "Convertion Stopped" | mail -s "Alert - Convertion" [email protected]
fi

It is now working fine and we can Integrate it with cronjob also.

Upvotes: 0

Igor Chubin
Igor Chubin

Reputation: 64623

Use brackets:

if [ "$unicorn_cnt" == 0 ]; then

Or better write it this way:

if ! ps -ef | grep -q [u]nicorn; then
 echo "Unicorn Stopped" | mail -s "Alert - Unicorn" [email protected]
fi

That means 'check ps -ef for unicorn, and if it is not found do this'

Upvotes: 1

dogbane
dogbane

Reputation: 274878

For numeric comparisons you should use eq not ==. Use [[ for conditional expressions. Use a here string rather than echo in your mail command.

Try this:

if [[ $unicorn_cnt -eq 0 ]]; then
    mail -s "Alert - Unicorn" [email protected] <<< "Unicorn Stopped"
fi

Upvotes: 0

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