Linux System Administration

What command is used to create a new directory in Linux?

• mkdir

• createdir

• newdir

• mkfile

Explain the difference between chmod and chown commands.

• chmod and chown commands are used interchangeably.

• The difference between chmod and chown commands is that chmod changes permissions, whereas chown changes ownership.

• chmod is used for directories, while chown is used for files.

• chmod changes ownership, whereas chown changes permissions.

What is the purpose of the 'ls' command in Linux?

• To list directory contents

• To create a new directory

• To display the current date and time

• To install new software packages

How can you add a new user in Linux?

• Use the 'createuser' command in Linux.

• Run the 'insertuser' command in Linux.

• Use the 'adduser' command in Linux.

• Execute the 'newuser' command in Linux.

What is the significance of the 'sudo' command in Linux?

• It allows users to execute commands with elevated privileges.

• It grants users access to all system files

• It enables users to change the system time

• It allows users to delete files without confirmation

Write a simple shell script to display the current date and time.

• display date and time

• date

• time

• echo date

Explain the use of the 'grep' command in Linux.

• The 'grep' command in Linux is used to change system settings.

• The 'grep' command in Linux is used to search for specific patterns in files.

• The 'grep' command in Linux is used to play music files.

• The 'grep' command in Linux is used to create new directories.

How can you list all the processes running on a Linux system?

• top

• ls -a

• cat /proc

• ps aux

What is the purpose of the 'passwd' command in Linux?

• To change a user's password in Linux.

• To display system information in Linux.

• To install new software packages in Linux.

• To create a new user in Linux.