No such file or directory with grep command

Asked May 15 '19 at 06:46

Active May 15 '19 at 06:52

Viewed 50 times

Following is the output of my Unix command

$ /data/nagios/libexec/check_http -I example.com  -C 30 -p443 --sni
OK - Certificate 'example.com' will expire on 05/10/2020 12:00.

But when I do a grep on the output inside a script,it shows "No such file or directory"

grep: OK - Certificate 'example.com' will expire on 05/10/2020 12:00.: No such file or directory

Below is the script

 #!/bin/bash
 output=`/data/nagios/libexec/check_http -I example.com  -C 30 -p443 --sni`
 grep 'OK' "$output"

Can anybody please guide how to resolve this. It works fine when I execute directly on commandline

  $ /data/nagios/libexec/check_http -I example.com  -C 30 -p443 --sni | grep OK
  OK - Certificate 'example.com' will expire on 05/10/2020 12:00.

edited May 15 '19 at 06:52

asked May 15 '19 at 06:46

Zama Ques

What do you want to do? Do you want to grep another commands output? – KamilCuk May 15 '19 at 06:48
1

You need to do `echo "$output" | grep 'OK'` or use here-strings of `bash` as `grep 'OK' <<<"$output"` – Inian May 15 '19 at 06:51

0 Answers0