Question

I need help with this.

22. Show a command that will create a file named "etc.tar" in your home directory from recursively going through all of the files in the "/etc" directory. In other words, the "etc.tar" file will include the files in the "/etc" directory as well as all of its subdirectories. IMPORTANT: This command must work for any user as well as work from any directory.  

23. In bash, multiple commands can appear on a single command line when they are separated by certain one to two character control operators. Excluding the newline command initiator, list five other control operators which separate commands.  

Answer 1

22 ) The following command will create etc.tar in home directory by recursively going through all files in /etc directory.

                             sudo tar -cvf /home/etc.tar /etc

23 )

-> ;

This executes command right to it irrespective of whether the command left to it executed successfully or not.

-> &&

This executes command right to it only if the command left to it is executed successfully.

-> ||

This executes command right to it only if the command left to it is not executed successfully.

-> | (pipe)

This sends the standard output of command left to it to the standard input of the command right to it.

But the standard error still goes into its default destination.

-> |&

Same as above but standard error also goes to the command right of it.