tee
standard out
df -h | tee disk_usage.txt
standard out and standard error
some_command 2>&1 | tee /tmp/out
Capturing return code
Capturing return code of command WHILE using tee
From Capturing Return Code WHILE using `tee`
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You cannot just capture return code as you typically would (Using [ "$?" -eq 0 ]). Since you will end up capturing the return code of tee which will be successful if tee was able to write to file.
Hence you need to use ${PIPESTATUS[0]}
some_func(){
return 1
}
main() {
some_func 2>&1 | tee /tmp/out
return_code="${PIPESTATUS[0]}"
echo "Return code from original command: ${return_code}"
if [ "$return_code" -eq 0 ]; then
echo_green "success"
else
echo_red "failure"
return 1;
fi
}
main "${@}" || exit 1
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