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Which of the following system calls performs the action of cd command?

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Which of the following system calls performs the action of cd command?

(a) chdir

(b) fchdir

(c) mkdir

(d) chdir and fchdir
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Right option is (d) chdir and fchdir

Explanation: There are two system calls that perform the action of cd command. They are chdir and fchdir which uses pathname and a file descriptor respectively as an argument.
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