What is a shell? What is its purpose? What is a login shell? How can you determine the name of your login shell? Give command(s) that you can use for this purpose. Give names of three LINUX shells. Which are the most popular? Which shell do you normally use? Why?
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When you log on, the LINUX system starts running a program that acts as an inter-face between you and the LINUX kernel. This program, called the LINUX shell, exe-cutes the commands that you have typed in via the keyboard. When a shell starts running, it gives you a prompt and waits for your commands. When you type a command and press
The shell that starts running when you logon is known as your login shell. The login shell on our LINUX computer is Bash. You can determine the name of your login shell by executing the echo $SHELL command.
The names of three LINUX shells are: Bourne Again (Bash), TC (tcsh), and Z (zsh). The most popular shells are Bash and TC shells.
I normally use Bash because it has the best features for interactive use as well as for shell scripting.
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Identify the problems in the following code.
``` public class Test { public static void main(String argv[]) { System.out.println("argv.length is " + argv.length); } } ``` a. The program has a compile error because String argv[] is wrong and it should be replaced by String[] args. b. The program has a compile error because String args[] is wrong and it should be replaced by String args[]. c. If you run this program without passing any arguments, the program would have a runtime error because argv is null. d. If you run this program without passing any arguments, the program would display argv.length is 0.
What is clipping and how can the MMX architecture be used to facilitate clipping operations?
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