Terminal is a great application. And we usually use Terminal for editing scripts and invoking things. But what about invoking Terminal from, well, Terminal. For starters, let’s look at opening a Terminal session to the root of the boot volume (aka /): open -a Terminal / The -a option, when used with the open command, allows you to define which application that the item defined in the following position will open in. For example, you could open an XML file in Xcode open -a Xcode /usr/share/postgresql/pg_hba.conf.sample You could then open Terminal by passing other commands into the command. For example, to open a new Terminal window to the current working…
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Piping Commands
The pipe (|) character is used to combine multiple commands. A pipe is a temporary storage place where the output of one command is stored and then passed as the input for a second command. Pipes are used to run more than two commands from the same command line. The sort command is used to sort data. When you run the ls –l command, you will see a listing of the files in a directory with each file shown on a separate line. When you use a pipe after the command and then sort your results, you will sort the data listed on the screen by the list command. The…
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Directory Listing with Permissions
To list the files in a directory with the permissions for files, use the following command (assuming you’re in the working directory you would like to list files for: ls -al