Which symbols are used in vi to search for a pattern?

Which key is used to switch from command mode to input mode in Vim?

The command used for changing the user's login password is-

Which of the following operators are used for logical execution?

Which option is used with the cat command to display files with line numbers?

What is the exit status of the cmp command if both the files are identical?

Which one of the following commands is incorrect? 

Which command is used to select lines 3 to 10 from the file pat.lst?

What is the function of the following command?

$ sed 's/ *|/|/g' emp.lst

What is the usage of the ip command in Linux?