Which symbol is used to append an existing file?
 

Which of the following is used to compress files? 

On a UNIX system, there can be ____ shells running simultaneously.

How to get or set the system user name using the terminal?

Which Linux command is used to display the first n lines of a file?

Which command is used to view compressed text files in linux.

Which option is used with the ls command to display a long listing of files with seven attributes?

Which of the following symbol(s) can be used to redirect the output to a file or another program?

What are escape sequences? 

What is the purpose of using the -a option with the ls command?