This post contains a tip from TACC helping debug the shell script.

Tip 155:
A nice way to debug shell scripts is to define the bash shell function “shdebug” shown below.

shdebug () {
    env PS4=' ${BASH_SOURCE}:${LINENO}(${FUNCNAME[0]}) ' sh -x $1;
}

This will give the file, line number and function name for each line in a shell script. To use do:

shdebug /path/to/bash_shell_script

Credits

• TACC - Texas Advanced Computing Center