Which command is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric characters ?
Correct answer: A. cat emp[!0-9]
- A. cat emp[!0-9]
- B. more [emp][!0-9]
- C. cat emp[x-z]
- D. cat emp[a-z]
Explanation
In a shell glob, `[!0-9]` matches one character that is not a digit, so `cat emp[!0-9]` selects names beginning with `emp` and having a non-digit next character. To allow any additional characters, a trailing `*` would also be needed.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Software Development Lifecycle
423 free Software Development Lifecycle MCQs from Software Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Software Engineering questions like this
Software Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Software Development Lifecycle questions
Which of the following format of partition tables does Linux use ?
Which program is used to automatically install Red Mat Linux on identical hardware ?
What type of addressing format is used by Class A network ?
Which command is used to make all files and sub-directories in the directory (progs) executable by all users ?
Which commands is used to assign executable permission to all of the files named "letter" ?
In Bourne shell, which file sets the Unix environment for the user when the logs into his HOME directory ?