Basics Linux Commands

Overview

• Tutorial: 30 min

  Objectives:

  • Learn how to use Gadi terminal.

  • Learn some basic Linux commands.

File and Directory Management

ls: List files and directories.

Detailed list view with permissions, size, and timestamps:

ls -l

Show hidden files:

ls -a

cd: Change directory to a specified directory.

Move to a specified directory.

cd /path/to/directory

Move up one directory level:

cd ..

Move to your home directory:

cd ~

pwd: Print the current working directory.

pwd

mkdir: Create a new directory.

mkdir test

touch: Create a new file.

touch test.txt

rm: Remove files or directories.

Remove files:

rm test.txt

Remove directories:

rm -rf test

cp: Copy files or directories

Copy file1 to file2:

touch file1.txt
cp file1.txt file2.txt

Recursively copy directory1 to directory2

mkdir dir1
cp -r dir2

mv: Move or rename files or directories.

Move files:

mv file1.txt file2.txt

Move directories:

mv dir1 dir2

Process Management

top: Display real-time information about system processes

top

ps: List currently running processes

ps -aux

kill: Terminate a process

kill <pid>

File Transfer

scp: Securely copy files between local and remote systems.

Copy local_file to a remote path on Gadi

scp local_file user@gadi.nci.org.au:/remote/path

Copy file from Gadi to the current local directory.

scp user@gadi.nci.org.au:/remote/path/file .

Text Viewing and Editing

cat: Display the contents of a file.

cat file.txt

less: View file content page by page.

less file.txt

nano: Simple text editor.

nano file.txt

vim: Advanced text editor.

vim file.txt