redirect all output in a bash script when using set -x

bash io-redirection

This is what I've just googled and I remember myself using this some time ago...

Use exec to redirect both standard output and standard error of all commands in a script:

#!/bin/bashlogfile=$$.logexec > $logfile 2>&1

If you also want to see the output and debug on the terminal in addition to in the log file, see redirect COPY of stdout to log file from within bash script itself.

If you want to handle the destination of the set -x trace output independently of normal STDOUT and STDERR, see bash storing the output of set -x to log file.

bash io-redirection

the -x output goes to stderr, so to log it do:

set -xexec 2>/tmp/mylog

bash io-redirection

In my case, the script was being called multiple times from elsewhere, and I wasn't seeing everything, so I did an append instead, and it worked:

exec 1>>FILENAME 2>&1set -x

To avoid confusion, be sure to delete FILENAME before each run.

CodeHunter