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81 lines
1.7 KiB
Markdown
81 lines
1.7 KiB
Markdown
# Command line interface
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The Raspberry Pi OS, Raspbian, uses CLI as its primary user interface (which is common for Linux-based operating systems). You can use [a secure shell connection](ssh.md) to access the command line.
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## Basic commands
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> **Hint** Double-tapping the `Tab ↹` key autocompletes the command or its argument. This is known as "tab completion".
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Show the contents of the current directory:
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```bash
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ls
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```
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Change current (working) directory:
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```bash
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cd catkin_ws/src/clover/clover/launch
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```
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Go one directory level up:
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```bash
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cd ..
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```
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Print path to the current directory:
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```bash
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pwd
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```
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Print contents of the `file.py` file:
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```bash
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cat file.py
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```
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Run `file.py` as a Python script:
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```bash
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python file.py
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```
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Reboot Raspberry Pi:
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```bash
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sudo reboot
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```
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You can terminate currently running (foreground) program by pressing `Ctrl`+`C`.
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Read more about the Linux command line in the Raspberry Pi documentation: https://www.raspberrypi.org/documentation/linux/usage/commands.md.
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## Editing files {#editing}
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You can use **nano** to edit files on the Raspberry Pi. It is one of the more user-friendly console-based text editor.
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1. Use the following command to edit or create a file:
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```bash
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nano path/to/file
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```
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For example:
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```bash
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nano ~/catkin_ws/src/clover/clover/launch/clover.launch
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```
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<img src="../assets/nano.png" alt="Editing files in nano" data-action="zoom">
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2. Edit the file.
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3. Press `Ctrl`+`X`, `Y`, `Enter` to save your file and exit.
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4. Restart the `clover` service if you've changed .launch files:
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```bash
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sudo systemctl restart clover
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```
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You may also use other editors like **vim** if you prefer.
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