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XK0-006 Practice Question: Which TWO commands can be used to change the…
Which TWO commands can be used to change the group ownership of a file? (Choose exactly two.)
⚠ Common exam trap
The trap here is that candidates often forget `chown` can change group ownership using the colon syntax (e.g., `chown :group file`), leading them to select only `chgrp` or incorrectly choose `chmod` or `groupmod`.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
chgrp
The `chgrp` command is specifically designed to change the group ownership of a file or directory. The `chown` command can also change group ownership when used with the colon syntax (e.g., `chown :groupname file`). Both commands modify the file's group ID (GID) in the inode metadata.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
chmod
Why it's wrong here
chmod changes permissions, not ownership.
- ✓
chgrp
Why this is correct
chgrp directly changes the group of a file.
- ✗
groupmod
Why it's wrong here
groupmod modifies group properties, not file ownership.
- ✓
chown
Why this is correct
chown can change group ownership with syntax chown :group file.
- ✗
usermod
Why it's wrong here
usermod modifies user account properties, not file ownership.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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