[Answer]-Shell script – store output of "kill -HUP 1234" (gunicorn command) to variable and check if the variable contains "No such process"

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Usually such error messages are output on the stderr stream, while the $() construct returns only the stdout stream. You need to redirect stderr to stdout:

k=$(kill -HUP 1234 2>&1)

Your regular expression has an error: the *. at the end must be .*; you will also need to quote your strings in your test:

if [[ "$k" =~ .*No\ such\ process.* ]]

Note that "$k" is quoted, while the spaces in the regular expression are escaped; you cannot quote the regular expression (as ".*No such process.*"), as using a quoted string in a =~ test forces string match instead of a regular expression match.

👤lanzz

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