22 июн. 2017 г. · You can use output=$(grep -c 'name' inputfile) The variable output will then contain the number 0, 1, or 2. Then you can use an if statement to execute ...

18 сент. 2012 г. · Yes Grep returns 0 if pattern is found (true) and 1 if the pattern is not found (false). Keep in mind grep is line based so the search term you ...

15 дек. 2016 г. · If grep returns any other value, the test is run and returns the true greater than 1 error exit code that should correctly halt the script, we ...

16 июн. 2018 г. · The grep utility exits with one of the following values: 0 One or more lines were selected. 1 No lines were selected. >1 An error occurred.

17 апр. 2017 г. · Just tack the exit status check after grep , it will always get the exit status from the last command of the pipeline by default:

21 февр. 2023 г. · I'm creating a simple command to execute within GitHub Actions, which builds a Makefile and returns an error if found (matching Error 1 ) and success when not ...

23 авг. 2019 г. · grep will always match when searching for a null string "" , and return a zero exit code: $ echo $PWD | grep ""; echo $? /home/jim 0

30 сент. 2014 г. · @jimmij - if you are using bash you can use 'set -o pipefail' and the return code will be not be of grep but the command that failed.

12 янв. 2022 г. · The simplest form of the command is curl -v "${url}" | grep -q "${pattern}" but grep consumes the response body.

11 дек. 2013 г. · You simply need to combine grep -q <pattern> with an immediate check of the exit code for last process to quit ( $? ). You can use this to build ...