First Linux commands in Linux CLI - Step-by-Step Execution

Concept Flow - First Linux commands

Open Terminal

↓

Type Command

↓

Press Enter

↓

Shell Executes Command

↓

Output Displayed

↓

Ready for Next Command

This flow shows how you open a terminal, type a Linux command, press Enter, and see the output.

Execution Sample

Linux CLI

pwd
ls
cd /tmp
pwd

This sequence shows checking current directory, listing files, changing directory, and checking again.

Execution Table

Step	Command Typed	Shell Action	Output	Current Directory
1	pwd	Print current directory	/home/user	/home/user
2	ls	List files in current directory	Documents Downloads Music	/home/user
3	cd /tmp	Change directory to /tmp		/tmp
4	pwd	Print current directory	/tmp	/tmp
5		No more commands		/tmp

💡 No more commands to execute, session waits for next input.

Variable Tracker

Variable	Start	After 1	After 2	After 3	After 4	Final
Current Directory	/home/user	/home/user	/home/user	/tmp	/tmp	/tmp

Key Moments - 2 Insights

Why does the output of 'pwd' change after 'cd /tmp'?

Because 'cd /tmp' changes the current directory to /tmp, so the next 'pwd' shows the new location (see execution_table rows 3 and 4).

Why does 'ls' show files only from the current directory?

'ls' lists files in the directory you are currently in, which is /home/user before 'cd /tmp' (see execution_table row 2).

Visual Quiz - 3 Questions

Look at the execution table, what is the current directory after step 3?

A /tmp

B /home/user

C /root

D /var

💡 Hint

Check the 'Current Directory' column at step 3 in the execution_table.

At which step does the output of 'pwd' show '/home/user'?

A Step 1

B Step 4

C Step 3

D Step 2

💡 Hint

Look at the 'Output' column for 'pwd' commands in the execution_table.

If we run 'cd /var' instead of 'cd /tmp' at step 3, what would be the output of 'pwd' at step 4?

A /tmp

B /var

C /home/user

D /root

💡 Hint

Changing directory changes the output of 'pwd' to the new directory (see key_moments explanation).

Concept Snapshot

First Linux commands:
- Open terminal
- Type commands like pwd, ls, cd
- Press Enter to run
- pwd shows current folder
- ls lists files there
- cd changes folder
- Output shows results immediately

Full Transcript

This lesson shows how to use basic Linux commands in a terminal. First, you open the terminal and type a command like pwd to see your current folder. Then, you can list files with ls. To move to another folder, use cd followed by the folder path. After changing folders, pwd shows the new location. Each command runs when you press Enter, and the shell shows the output. This helps you navigate and see files on your computer using simple commands.