Debug Bash Script

How to debug a bash script? you can investigate the causes of the problems so you can apply fixes. Yeah, I will guide you turn on debug bash script. Bash script the essential for DevOps Roles.

Debug bash script using various methods.

Running a Debug bash script with -x option from the command line

bash -x Bash_script_name

Or

bash -xv Bash_script_name

Using shebang line in debug mode

#!/bin/bash -x
echo "welcome to DevopsRoles.com"

Use set builtin command

Bash script can tun on or off using set command

•  Display commands and their arguments: set -x
• Display shell input lines: set -v
• This may be used to check a shell script for syntax errors. To read commands but do not execute them: set -n

#!/bin/bash
## Turn on debug mode ##
set -x 
echo "Users currently on the machine"
w
## Turn OFF debug mode ##
set +x

The screen output terminal:

Conclusion

Thought the article, you can use Debug Bash Script as above. I hope will this your helpful. More details refer to Bash script.