Test Your Knowledge | HP Certified: HP-UX System Administration

1:	Just after login, you issue the command `echo HOME` . What will be the output of this command? It displays the `HOME` directory name of the user . It displays nothing, as the `HOME` variable is not yet defined. It displays the word `HOME` . none of the above
2:	What is not true about the `PATH` variable? It shows the path of the current directory. It shows the names of directories that are checked when searching for a command. It is usually set in the `/etc/profile` by the system administrator. The value of the `PATH` variable can be changed by a user.
3:	You have a variable " `ABC` " with value " `Alphabets` ". You use the following command to change its value. ABC='All $ABC' What will be the new value of the variable? `All $ABC` `All Alphabets` `All ABC` The variable value can't be changed with this command. It remains " `Alphabets` ".
4:	To assign the output of a command to a variable, we use: double-quote characters comma characters single-quote characters back-quote characters
5:	The value of the `PS2` variable on your system is " `>` " (greater-than symbol). You issue an incomplete command. What will be the shell's response? The shell will issue an error message showing that the command is incomplete. The shell will display " `PS2` ". The shell will try to execute that part of the command that is supplied. The shell will give a " `>` " prompt and wait for you to complete the command.
6:	What is wrong with the shell variable name `3Xyab2` ? It is not a legal name, because a shell variable must contain only uppercase letters . It is not legal, because variables can only have uppercase or lowercase letters, not a combination. It starts with a digit, so it is not a legal name. It ends with a digit, so it is not a legal name.

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