83 lines
2.1 KiB
Markdown
83 lines
2.1 KiB
Markdown
|
# Debugging, testing and shortcuts
|
||
|
|
|
||
|
|
In order to debug your bash scripts, you can use `-x` when executing your scripts:
|
||
|
|
|
||
|
|
```bash
|
||
|
|
bash -x ./your_script.sh
|
||
|
|
```
|
||
|
|
|
||
|
|
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.
|
||
|
|
|
||
|
|
Another way to test your scripts is to use this fantastic tool here:
|
||
|
|
|
||
|
|
[https://www.shellcheck.net/](https://www.shellcheck.net/)
|
||
|
|
|
||
|
|
Just copy and paste your code into the textbox, and the tool will give you some suggestions on how you can improve your script.
|
||
|
|
|
||
|
|
You can also run the tool directly in your terminal:
|
||
|
|
|
||
|
|
[https://github.com/koalaman/shellcheck](https://github.com/koalaman/shellcheck)
|
||
|
|
|
||
|
|
If you like the tool, make sure to star it on GitHub and contribute!
|
||
|
|
|
||
|
|
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.
|
||
|
|
|
||
|
|
The below two are particularly useful if you have a very long command.
|
||
|
|
|
||
|
|
* Delete everything from the cursor to the end of the line:
|
||
|
|
|
||
|
|
```
|
||
|
|
Ctrl + k
|
||
|
|
```
|
||
|
|
|
||
|
|
* Delete everything from the cursor to the start of the line:
|
||
|
|
|
||
|
|
```
|
||
|
|
Ctrl + u
|
||
|
|
```
|
||
|
|
|
||
|
|
* Delete one word backward from cursor:
|
||
|
|
|
||
|
|
```
|
||
|
|
Ctrl + w
|
||
|
|
```
|
||
|
|
|
||
|
|
* 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:
|
||
|
|
|
||
|
|
```
|
||
|
|
Ctrl + r
|
||
|
|
```
|
||
|
|
|
||
|
|
* Clear the screen, I use this instead of typing the `clear` command:
|
||
|
|
|
||
|
|
```
|
||
|
|
Ctrl + l
|
||
|
|
```
|
||
|
|
|
||
|
|
* Stops the output to the screen:
|
||
|
|
|
||
|
|
```
|
||
|
|
Ctrl + s
|
||
|
|
```
|
||
|
|
|
||
|
|
* Enable the output to the screen in case that previously stopped by `Ctrl + s`:
|
||
|
|
|
||
|
|
```
|
||
|
|
Ctrl + q
|
||
|
|
```
|
||
|
|
|
||
|
|
* Terminate the current command
|
||
|
|
|
||
|
|
```
|
||
|
|
Ctrl + c
|
||
|
|
```
|
||
|
|
|
||
|
|
* Throw the current command to background:
|
||
|
|
|
||
|
|
```
|
||
|
|
Ctrl + z
|
||
|
|
```
|
||
|
|
|
||
|
|
I use those regularly every day, and it saves me a lot of time.
|
||
|
|
|
||
|
|
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)!
|