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Performing more than one command

Executing the second command only if the first is successful

 

To do this you would type:

command1 && command2

command2 will be executed if command1 successfully completes (if command1 fails command2 won't be run). This is called a logical AND.

Executing the second command only if the first fails

 

To do this you would type:

command1 || command2

command2 will be executed if command1 does not successfully complete (if command1 is successful command2 won't be run). This is called a logical OR.

Executing commands sequentially

 

To execute commands sequentially regardless of the success/failure of the previous you simply type:

command1; command2

command2 will execute once command1 has completed.

More than two commands: You can continue to use ';' (semicolon) characters to do more and more commands on the one line.