Which command is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric characters?
A. cat emp[!0-9]
B. more [emp][!0-9]
C. cat emp[x-z]
D. cat emp[a-z]
E. None of the above
Answer: Option A
Solution (By Examveda Team)
In Unix, the command cat emp[!0-9] is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric character. Here, the square brackets denote character classes, and the exclamation mark (!) negates the character class. So, [!0-9] matches any character that is not a numeric character.Therefore, Option A: cat emp[!0-9] is the correct command to concatenate all files beginning with the string 'emp' and followed by a non-numeric character.
This Question Belongs to Computer Science >> Unix
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