The command that can be used to restrict incoming messages to a user is_______________?
A. mesg
B. grep
C. halt
D. sleep
Which of the following commands is used to rename a file ?
Which of the following commands is used to rename a file ?
A. rename
B. remove
C. mv
D. ren
The second set of the three permissions (r-) indicates that______________?
The second set of the three permissions (r-) indicates that______________?
A. group has read permission only
B. other has read permission only
C. owner has read permission only
D. group has write permission only
Which of the following commands is used to obtain a list of all files by modification time ?
Which of the following commands is used to obtain a list of all files by modification time ?
A. ls -1
B. ls -t
C. ls -i
D. ls -R
Which of the following special shell variables is used to process number of the last background job ?
Which of the following special shell variables is used to process number of the last background job ?
A. $!
B. $#
C. 0
D. $*
Which command is used to remove a file ?
Which command is used to remove a file ?
A. remove
B. rm
C. mv
D. del
Which symbol will be used with grep command to match the pattern pat at the beginning of a line ?
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^
Which command is used to remove the read permission of the file ‘note’ from both the group and others ?
Which command is used to remove the read permission of the file ‘note’ from both the group and others ?
A. chmod go+r note
B. chmod go+rw note
C. chmod go-x note
D. chmod go-r note
What command is used with vi editor to delete three words ?
What command is used with vi editor to delete three words ?
A. $
B. 3 dw
C. 3 x
D. 3 dd
Which of the following command is used to mount NFS filesystems ?
Which of the following command is used to mount NFS filesystems ?
A. nfsmount
B. knfsd
C. mount
D. All of the above