ExamVeda
Login
Home

Which of the following special shell variables is used to process...

This question belongs to Computer Science Unix
Unix
?

Which of the following special shell variables is used to process number of the last background job?

Answer & Solution
Correct Answer: Option A
In Unix shell scripting, the $! special variable is used to process the number of the last background job. It holds the process ID (PID) of the last command run in the background.
So, $! is the special shell variable used to process the number of the last background job.
Examveda
Question posted by Examveda
Community

Join the Discussion

No comments yet Be the first to discuss this question.
Keep Learning

Related Questions on Unix

Which symbol will be used with grep command to match the pattern pat at the beginning of a line?
A. ^pat B. $pat C. pat$ D. pat^ E. None of the above
Which command is used to sort the lines of data in a file in reverse order
A. sort B. sh C. st D. sort -r E. None of the above
Which command is used to display the top of the file?
A. cat B. head C. more D. grep E. None of the above
Which command is used to copy all files having the string chap and any two characters after that to the progs directory?
A. cp chap?? progs B. cp chap* progs C. cp chap[12] /progs/*.* D. cp chap?? /progs/* E. None of the above
More Related Questions on Unix