Download and install bashdb

Recently found a debug shell A good assistant for scripts ,bashddb.
Download address ：
https://sourceforge.net/projects/bashdb/files/

And then choose bashdb

Then watch it on your computer bash Version of

bash --version

bash --version
GNU bash, version 5.0.17(1)-release (x86_64-pc-linux-gnu)
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

My is 5.0.17, Then I choose 5.0-1.1.2 Version of bashdb download .

./configure 
make 
make install

You can use it

bashdb --debug xx.sh

Then enter the following bashdb command ：
One 、 List codes and query code classes ：
l Lists the items below the current line 10 That's ok

• Lists the front of the line of code being executed 10 That's ok
  . Return to the line of code being executed
  w Lists the code before and after the line of code being executed
  /pat/ Backward search pat
  ？ pat？ Search forward pat
  Two 、Debug The control class ：
  h help
  help command Get the specific information of the command
  q sign out bashdb
  x Arithmetic expression Calculates the value of an arithmetic expression , And show it
  !! Space Shell command Parameters perform shell command
  Use bashdb Conduct debug Common commands (cont.)
  3、 ... and 、 Control script execution class ：
  n Execute the next statement , Encountered function , Do not enter the function to execute , Treat functions as black boxes
  s n Step by step n Time , When a function is encountered, it enters the function
  b Line number n In the line number n Set breakpoint
  del Line number n Undo line number n The breakpoint at
  c Line number n Execute until line number n It's about
  R Restart top note of debugging script
  Finish Execute to the end of the program
  cond n expr Conditional breakpoints