Exit status is 0 if match, 1 if no match, and 2 if trouble. If you grep for "isVoid\(\)" the output of grep should never be 0.

I have a script that carries out a "grep" command, and displays the output on screen. What I need to do is utilise the exit status of this grep.

I want the file logfile.log to be empty if no match is found. But if, the file server* dont even exist, then I want trap to catch it and show the error.

You are setting your "a" variable to all those lines. And the result of the grep will never be a "0" since the string you are searching for is not "0". If ...

22 июн. 2011 г. · Lose the test command and the quotes, as test is only needed when you're doing a comparison, but not when the command returns a true or false exit code.

It pretty much means that the string you are searching for was not found. To be sure that is the case tell us what is the output of. Code: grep -ci "invalid ...

I am performing a grep command and I need to know how to echo "NONE" or "0" to my file if grep does not find what i am looking for.

Looking through grep man pages -q will exit without printing the lines after the first match, but I need the output.

I am trying to get the exit status of grep and test a condition with it, But it does not seem to be working as expected since i am doing something wrong ...

Code: Exit Status This command returns the following exit values: 0 A match was found. 1 No match was found. >1 A syntax error was found or a file was ...