Layer one of the OSI model is_______________________?
A. network layer
B. transport layer
C. physical layer
D. physical layer
Basic of linux unix
What command is used with vi editor to move back to the beginning of a word ?
What command is used with vi editor to move back to the beginning of a word ?
A. w
B. e
C. a
D. b
What command is used to count the total number of lines, words, and characters contained in a file ?
What command is used to count the total number of lines, words, and characters contained in a file ?
A. countw
B. wcount
C. wc
D. count p
The cat command is used to_______________?
The cat command is used to_______________?
A. capture a file
B. display a file
C. print a file
D. copy a file
Which of the following keys is used to delete the character beneath the cursor ?
Which of the following keys is used to delete the character beneath the cursor ?
A. x
B. X
C. dd
D. D
The UNIX file system stores a data in physical blocks of_______________?
The UNIX file system stores a data in physical blocks of_______________?
A. 1024 bytes
B. 2048 bytes
C. 512 bytes
D. 256 bytes
Which of the following commands is used to remove files ?
Which of the following commands is used to remove files ?
A. erase
B. delete
C. rm
D. dm
Which command is used to assign only read permission to all three categories of the file ‘note’ ?
Which command is used to assign only read permission to all three categories of the file ‘note’ ?
A. chmod go+r note
B. chmod a-rw
C. chmod ugo=r note
D. chmod u+r,g+r,o-x note
The command that can be used to restrict incoming messages to a user is_______________?
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