Pipe output and capture exit status in Bash
There is an internal Bash variable called $PIPESTATUS; it’s an array that holds the exit status of each command in your last foreground pipeline of commands.
<command> | tee out.txt ; test ${PIPESTATUS[0]} -eq 0Or another alternative which also works with other shells (like zsh) would be to enable pipefail:
set -o pipefail...The first option does not work with zsh due to a little bit different syntax.
Dumb solution: Connecting them through a named pipe (mkfifo). Then the command can be run second.
mkfifo pipe tee out.txt < pipe & command > pipe echo $?
using bash's set -o pipefail is helpful
pipefail: the return value of a pipeline is the status of the last command to exit with a non-zero status, or zero if no command exited with a non-zero status