Basic Linux Command Line#

Open a terminal.

whoami: Displays username.
```
whoami
```
hostname: Displays the name of the current host.
```
hostname
```
pwd (Print Working Directory): Shows the current directory (folder).
```
pwd
```
ls (List): Lists the files and directories in the current directory.
```
ls /SNS
ls /HFIR
```
cd (Change Directory): Moves to a different directory.
```
cd /SNS
cd /HFIR
cd ~/
```
mkdir (Make Directory): Creates a new directory.
```
mkdir new_directory
```
touch: Creates an empty file or updates the timestamp of an existing file.
```
touch filename
```
cp (Copy): Copies files or directories.
```
cp source destination
```
mv (Move): Moves or renames files or directories.
```
mv source destination
```
rm (Remove): Deletes files or directories. This action is irreversible.
```
rm file_name
```
nano or vim (Text Editors): Opens a terminal-based text editor to create or modify files.
```
nano filename
```
gedit (Text Editors): Opens a GUI-based text editor to modify files.
```
gedit filename
```
cat (Concatenate and Display): Displays the content of a file.
```
cat filename
```
man (Manual): Displays the manual pages for a command. Provides detailed information about the command and its options.
```
man command_name
```
echo: Prints a message or a variable to the terminal.
```
echo "Got Neutrons?"
```
history: Displays a list of recently used commands.
```
history
```
chmod (Change Mode): Changes the permissions of a file.
```
chmod permissions filename
```