Linux for Beginners - Essential Commands Every IT Girl Must Know

1 Where Am I? (Check Current Directory)#

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pwd

📌 This tells you which folder you’re in. Super useful if you ever feel lost.

2 What’s Inside This Folder? (List Files)#

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ls

📌 This shows all files and folders in the current directory.

💖 Pro tip:

• Use ls -l for more details (file size, date, owner).
• Use ls -a to see hidden files (yes, Linux hides stuff from you).

3 Moving Between Folders (Change Directory)#

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cd foldername

📌 Moves you into a folder.

Want to go back?

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cd ..

📌 Moves up one level.

Or just type:

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cd ~

📌 Takes you straight to your home directory.

✨ Think of these commands as teleporting through your files. No more aimless clicking!

4 Create a New Folder (mkdir)#

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mkdir myfolder

📌 Boom! A new folder is born.

💖 Pro tip:

• Want to create multiple nested folders? Use mkdir -p parent/child/grandchild.

5 Create a New File (touch)#

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touch myfile.txt

📌 Creates an empty file. Perfect for testing.

6 Move or Rename a File (mv)#

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mv oldname.txt newname.txt

📌 Works for renaming files AND moving them.

💖 Example: Move a file into a folder:

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mv myfile.txt myfolder/

Now it’s inside myfolder. So neat!

7 Copy a File (cp)#

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cp myfile.txt copyfile.txt

📌 Now you have a duplicate!

Want to copy a whole folder?

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cp -r myfolder newfolder

📌 The -r flag copies everything inside too!

8 Delete a File (rm)#

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rm myfile.txt

📌 Bye-bye, file!

Be super careful! If you use:

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rm -r myfolder

📌 It deletes the entire folder + its contents. No undo! 😱

9 Read a File (cat)#

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cat myfile.txt

📌 Shows the contents of a file instantly.

💖 Pro tip:

• If the file is too long, use:

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  less myfile.txt
  

  📌 This lets you scroll through it. Press q to exit.

10 Edit a File (nano)#

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nano myfile.txt

📌 Opens a simple text editor inside the terminal.

Check Running Processes#

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ps aux

📌 Shows all running programs.

Kill a Stuck Program#

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kill PID

📌 Or use:

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pkill -f process_name

📌 This kills the process by name (super handy!).

Redirecting Output: > vs >>#

• echo "Hello" > file.txt overwrites the file.
• echo "Hello" >> file.txt adds text to the file without deleting old content.

View Command History#

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history

📌 Lists all commands you’ve used—no more “What was that command again?” moments!

Find Any File#

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find / -name "filename"

📌 Searches for a file anywhere on your system.

Want something faster?

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locate filename

📌 But first, run:

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sudo updatedb

📌 This updates the file database for locate.