cp -u * dir_fileA. copy all files to directory dir_file
B. update all files
C. delete all files
D. update all files in the current working directory and copy newer ones to directory dir_file
Answer: Option D
This Question Belongs to Computer Science >> 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
A. cp chap?? progs
B. cp chap* progs
C. cp chap[12] /progs/*.*
D. cp chap?? /progs/*
E. None of the above
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