Execute commands and run tools in Terminal
You can use the command-line environment interactively by typing a command and waiting for a result, or you can use the shell to compose scripts that run without direct interaction.
Execute commands
To execute a command in the shell, enter the complete pathname of the tool’s executable file, followed by arguments, then press Return.
If a command is located in one of the shell’s known folders, you can omit path information and enter the command name. The list of known folders is stored in the shell’s PATH environment variable and includes the folders containing most command-line tools.
For example, to run the ls command in the current user’s home folder, enter the following at the command prompt, then press Return:
$ lsTo run a command in the current user’s home folder, precede it with the folder specifier. For example, to run MyCommandLineProg, use the following:
$ ~/MyCommandLineProgTo open an app, use the open command:
$ open -a MyProg.appWhen entering commands, if you get the message command not found, check your spelling. Here’s an example:
$ opne -a TextEdit.app -bash: opne: command not foundTerminate commands
To terminate the current command, press Control-C.
This sends a signal that causes most commands to terminate.
Repeat previously entered commands
The commands you enter during a session are saved so you can repeat a previously used command without retyping it.
Press the Up Arrow key. The last command you entered appears on the command line. Continue pressing the Up Arrow key until you see the command you want.
Press Return.