Setting the bash pipefail option (via set -o pipefail) allows the script to fail if a non-zero error is caught where there is a non-zero error in any step of a pipe.
However, we are running into SIGPIPE errors (error code 141), where data is written to a pipe that no longer exists.
Is there a way to set bash to ignore SIGPIPE errors, or is there an approach to writing an error handler that will handle all error status codes but, say, 0 and 141?
For instance, in Python, we can add:
signal.signal(signal.SIGPIPE, signal.SIG_DFL)
to apply the default behavior to SIGPIPE errors: ignoring them (cf. http://coding.derkeiler.com/Archive/Python/comp.lang.python/2004-06/3823.html).
Is there some similar option available in bash?
The trap command lets you specify a command to run when encountering a signal. To ignore a signal, pass the empty string:
trap '' PIPE