Библиотека сайта rus-linux.net
6.4. 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.