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Exam 101-500 topic 1 question 80 discussion

Actual exam question from LPI's 101-500
Question #: 80
Topic #: 1
[All 101-500 Questions]

Which of the following commands sets the SetUID permission on the executable /bin/foo?

  • A. chmod 4755 /bin/foo
  • B. chmod 1755 /bin/foo
  • C. chmod u-s /bin/foo
  • D. chmod 755+s /bin/foo
  • E. chmod 2755 /bin/foo
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Suggested Answer: A 🗳️
by georgerobel at Dec. 15, 2020, 6:27 a.m.

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Lazylinux
Highly Voted 1 year, 4 months ago
Selected Answer: A
For the special permissions, you prepend these numbers with another number where 4 is setuid, 2 is setgid, and 1 is the sticky bit
upvoted 11 times
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NeoSam999
Most Recent 8 months ago
Selected Answer: A
Correct Answer: A
upvoted 1 times
NeoSam999
8 months ago
To set SUID: ~$ chmod 4755 test-SetUID ~$ ls -l test-SetUID -rwsr-xr-x 1 neo neo 0 jul 1 19:37 test-SetUID To remove it: ~$ chmod 0755 test-SetUID ~$ ls -l test-SetUID -rwxr-xr-x 1 neo neo 0 jul 1 19:20 test-SetUID
upvoted 2 times
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georgerobel
2 years, 9 months ago
Correct answer is A.
upvoted 4 times
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