Unix - Engineering

Q1:

Which option will be used with touch command to change the access time?

A -a

B -b

C -t

D -h

E None of the above

ANS:A - -a

Touch command with option -a will be used when only access time is required change.

e.g., $ touch -a my_file

For more check out the below link :
http://en.wikipedia.org/wiki/Touch_(Unix)