bash return code after reading for pipe
Perhaps this can serve your purpose:
This answer has 2 parts, which you were looking for:
- Set $? to any required value
- Use
${PIPESTATUS[@]}array to obtain exit status of individual stages of the pipeline...
Code:
#!/bin/bashreturn_code() { return $1; } # A dummy function to set $? to any valuefifo=myPipemkfifo "${fifo}"|| exit 1{ read code <${fifo} return_code $code} | { timeout 1 sleep 2 timeoutCode=$? echo "${timeoutCode}" >${fifo}}ret=${PIPESTATUS[0]}rm "${fifo}"exit $retConsidering that the expected exit code of the entire script is actually being generated via stage 2 of the pipeline, below logic would also work.
#!/bin/bash fifo=myPipe trap "rm $fifo" EXIT #Put your cleanup here... mkfifo "${fifo}"|| exit 1 { read code <${fifo} } | { timeout 1 sleep 2 timeoutCode=$? echo unused > ${fifo} exit $timeoutCode }