Special permissions (setuid, setgid, sticky bit) in Linux CLI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to set the setuid bit on the file myapp.

Linux CLI

chmod [1] myapp

Drag options to blanks, or click blank then click option'

Ao+t

Bu+s

C+x

Dg+s

Attempts:

3 left

💡 Hint

Common Mistakes

Using g+s sets the setgid bit, not setuid.

Using +x only sets execute permission.

Using o+t sets the sticky bit, not setuid.

The setuid bit is set using u+s in the chmod command.

2fill in blank

medium

Complete the command to set the setgid bit on the directory shared.

Linux CLI

chmod [1] shared

Drag options to blanks, or click blank then click option'

Au+s

Bo+t

Cg+s

D+x

Attempts:

3 left

💡 Hint

Common Mistakes

Using u+s sets the setuid bit, not setgid.

Using o+t sets the sticky bit, not setgid.

Using +x only sets execute permission.

The setgid bit is set using g+s on directories to make new files inherit the group.

3fill in blank

hard

Fix the error in the command to set the sticky bit on the directory temp.

Linux CLI

chmod [1] temp

Drag options to blanks, or click blank then click option'

A+x

Bg+s

Cu+s

Do+t

Attempts:

3 left

💡 Hint

Common Mistakes

Using u+s or g+s sets setuid or setgid, not sticky bit.

Using +x only sets execute permission.

The sticky bit is set using o+t on directories to restrict file deletion.

4fill in blank

hard

Fill both blanks to create a directory project with setgid and sticky bits set.

Linux CLI

mkdir project && chmod [1][2] project

Drag options to blanks, or click blank then click option'

Ag+s

Bo+t

Cu+s

D+x

Attempts:

3 left

💡 Hint

Common Mistakes

Using u+s sets setuid, not setgid.

Using +x only sets execute permission.

Setgid is g+s and sticky bit is o+t. Both can be combined in chmod.

5fill in blank

hard

Fill all three blanks to create a file runme with setuid, setgid, and sticky bits set.

Linux CLI

touch runme && chmod [1][2][3] runme

Drag options to blanks, or click blank then click option'

Au+s

Bg+s

Co+t

D+x

Attempts:

3 left

💡 Hint

Common Mistakes

Using +x only sets execute permission.

Mixing up setuid and setgid bits.

Setuid is u+s, setgid is g+s, and sticky bit is o+t. All can be combined in chmod.