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LINUX QUESTIONS : PART 1

Which command is used to view the current terminal number?

 

tty

ctty

 ptty

stty

SHOW ANSWER

Which command is used to display the operating system name

 

os

 unix

kernel

uname

SHOW ANSWER

Which command is used to display the unix version/release

 

uname -r

uname -n

 uname -t

 kernel

SHOW ANSWER

Which command is used to view the avilable RAM

 

mem

 free

fdisk

df

SHOW ANSWER

Which option of rmdir command will remove all directories in recursive mode

–b

 –o

–r

 –t

SHOW ANSWER

Which represents the user home directory

 

/

 .

 ..

 ~

SHOW ANSWER

How do you rename file “new” to file “old”?

mv new old

 move new old

 cp new old

 rn new old

SHOW ANSWER

What command is used to copy files and directories?

 

copy

cp

 rn

 cpy

SHOW ANSWER

The file permission 764 means:

 

Every one can read, group can execute only and the owner can read and write

 Every one can read and write, but owner alone can execute

Every one can read, group including owner can write, owner alone can execute

 Every one can read and write and execute

SHOW ANSWER

The permission -rwxr–r– represented in octal expression will be

 

777

 666

 744

 711

SHOW ANSWER

. If user tries to remove (rm) a readonly file (444 permission), what will happen?

 

The file is removed successfully (and silently)

 The rm command prompts for a confirmation, the command is successful upon confirmation

 The rm command prompts for a confirmation, however the operation fails because of insufficient permissions

The rm command fails because of insufficient permissions

SHOW ANSWER

A user does a chmod operation on a file. Which of the following is true?

 

The last accessed time of the file is updated

The last modification time of the file is updated

The last change time of the file is updated

None of the mentioned

SHOW ANSWER

Which is the core of the operating system?

Shell

Kernel

Commands

Script

SHOW ANSWER
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