Software Shinobi
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83 lines
2.1 KiB
Markdown
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# Debugging, testing and shortcuts
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In order to debug your bash scripts, you can use `-x` when executing your scripts:
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```bash
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bash -x ./your_script.sh
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```
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Or you can add `set -x` before the specific line that you want to debug, `set -x` enables a mode of the shell where all executed commands are printed to the terminal.
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Another way to test your scripts is to use this fantastic tool here:
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[https://www.shellcheck.net/](https://www.shellcheck.net/)
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Just copy and paste your code into the textbox, and the tool will give you some suggestions on how you can improve your script.
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You can also run the tool directly in your terminal:
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[https://github.com/koalaman/shellcheck](https://github.com/koalaman/shellcheck)
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If you like the tool, make sure to star it on GitHub and contribute!
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As a SysAdmin/DevOps, I spend a lot of my day in the terminal. Here are my favorite shortcuts that help me do tasks quicker while writing Bash scripts or just while working in the terminal.
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The below two are particularly useful if you have a very long command.
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* Delete everything from the cursor to the end of the line:
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```
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Ctrl + k
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```
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* Delete everything from the cursor to the start of the line:
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```
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Ctrl + u
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```
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* Delete one word backward from cursor:
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```
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Ctrl + w
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```
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* Search your history backward. This is probably the one that I use the most. It is really handy and speeds up my work-flow a lot:
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```
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Ctrl + r
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```
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* Clear the screen, I use this instead of typing the `clear` command:
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```
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Ctrl + l
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```
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* Stops the output to the screen:
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```
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Ctrl + s
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```
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* Enable the output to the screen in case that previously stopped by `Ctrl + s`:
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```
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Ctrl + q
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```
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* Terminate the current command
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```
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Ctrl + c
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```
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* Throw the current command to background:
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```
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Ctrl + z
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```
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I use those regularly every day, and it saves me a lot of time.
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If you think that I've missed any feel free to join the discussion on [the DigitalOcean community forum](https://www.digitalocean.com/community/questions/what-are-your-favorite-bash-shortcuts)! |