quiz/Linux_Permissions_Quiz.md

[samglish]

🐧 Quiz: Linux File Permissions

Test your knowledge of file and directory permissions in Linux.

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❓ Questions

1. Which command is used to change the permissions of a file?
2. What does the permission string rwxr-xr-- mean?
3. Which command displays the permissions of a file or directory?
4. What does the following command do?

   chmod 755 script.sh

[Muhammad-Cyber-security]

*Questions & ✅ Answers:* 1. *Which command is used to change the permissions of a file?* ✅ chmod 🔍 *chmod (change mode) modifies file or directory permissions.* 2. *What does the permission string rwxr-xr-- mean?* ✅ Owner: read/write/execute; Group: read/execute; Others: read only 🔍 *Breakdown: rwx (7) for owner, r-x (5) for group, r-- (4) for others.* 3. *Which command displays the permissions of a file or directory?* ✅ ls -l 🔍 *Lists files in long format showing permissions, ownership, size, etc.* 4. *What does the following command do?* chmod 755 script.sh ✅ Gives full permissions to owner, read and execute to group and others 🔍 *Permission code 755 = rwxr-xr-x*

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------------------------------ 💡 Additional Notes from the Comment: - chmod 760 filename ➤ *Owner: rwx (7), Group: rw- (6), Others: --- (0)* - 777 = full access to all ➤ rwxrwxrwx - 755 = only owner can write, all can read/execute ➤ rwxr-xr-x - chown ➤ *Used to change file ownership (not permissions).* - 4 = read permission ➤ r-- - chmod a+x filename ➤ *Adds execute permission for all (user, group, others).* - chmod o-rwx filename ➤ *Removes all permissions for others.*

On Fri, Jun 20, 2025 at 1:11 PM BEIDI DINA SAMUEL ***@***.***> wrote: *samglish* left a comment (farhanashrafdev/90DaysOfCyberSecurity#102) <#102 (comment)> ✅ Answers chmod Owner: read/write/execute; Group: read/execute; Others: read only ls -l Gives full permissions to owner, read and execute to group and others chmod 760 filename 777 = full access for everyone; 755 = only the owner can write, others can read/execute chown 4 = read permission chmod a+x filename chmod o-rwx filename — Reply to this email directly, view it on GitHub <#102 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BM3MAZOZI7HQXAVDXYR5XC33EO62BAVCNFSM6AAAAAB7XVKLZ6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDSOJQGIYTEOBRGE> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.*** com>

[CHARLES2445]

OK