Description:

The Bash Debugger Project is a source-code debugger for bash,
which follows the gdb command syntax.
The purpose of the BASH debugger is to check
what is going on inside a bash script, while it executes:
* Start a script, specifying conditions that might affect its behavior.
* Stop a script at certain conditions (break points).
* Examine the state of a script.
* Experiment, by changing variable values on the fly.
The 4.0 series is a complete rewrite of the previous series.
Bashdb can be used with ddd: ddd --debugger /usr/bin/bashdb <script-name>.