You just type the commands in and press Enter - very much like Microsoft's Powershell and Command Prompt, or macOS's Terminal window (which itself runs on Bash)
The history command displays all commands that have been entered into the terminal.
The Palm Pre line are based on Linux. To access Linux commands, there is a terminal app. There is also an app called Internalz Pro that allows file and folder browsing. precentral.net has more info.
Run /sbin/ifconfig or on the terminal jst type: ifconfig -a
lsusb (in a terminal) will list any USB device connected to the computer.
You may patch your linux operating system using the terminal commands in the operating system. You must be a specialized and should know what you are doing before continuing this project.
Try the man pages. In a terminal type man shutdown
A script is a file that contains a set of commands to be performed. Instead of you manually entering all of the commands into the console, the script is run and does it automatically.
if the file is allready runnable you can type in the terminal: ./filename
if the file is allready runnable you can type in the terminal: ./filename
Linux is the kernel, from which many operating systems have branched out - Ubuntu and Linux Mint, to name but two. There is a Graphic User Interface (GUI) that allows a calculator to be used on the the desktop, or it is possible to calculate numbers using python terminal commands.
I assume you mean, "What is the linux terminal?" in which case, the terminal is a means of typing text commands rather than using the Graphic User Interface (GUI). The shortcut keys to open a terminal is to press down the Control (Ctrl) and Alt keys and tap the "T" letter key. To give just one example: At the terminal prompt, type ls to see a list of directories.
utilities is nothing but predefined commands in linux