Question

14. The following grep command will search the f.txt file for all lines containing any stand-alone three digit number.

a) Grep ‘…\{3\}’ f.txt
b) Grep ‘[0-9]\{3\}’ f.txt
c) Grep ‘[0-9] [0-9] [0-9]’f.txt
d) Grep ‘???’ f.txt
e) Grep -w ‘[0-9] \{3\}’ f.txt

Answer 1

[AI-generated answer — Bot]

b) Grep ‘[0-9]\{3\}’ f.txt