Unix - Study Mode

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[#361] To display the last five used commands, which one of the following commands is used (in bash shell)?

(A) history 5

(B) history -5

(C) history

(D) history 5-

Correct Answer

(A) history 5

[#362] Environment variable names can be defined only in uppercase.

(A) True

(B) False

Correct Answer

(B) False

[#363] Which command is used for reporting free space on the disk?

(A) fd

(B) df

(C) du

(D) sg

Correct Answer

(B) df

[#364] Which one of the following command is used for searching for a pattern in one or more file(s)?

(A) cd

(B) cp

(C) paste

(D) grep

Correct Answer

(D) grep

[#365] The superuser can set the sticky bit.

(A) True

(B) False

Correct Answer

(A) True