One key component of the ​bash​ shell is:

What is a variables name?

Who reads the value of the variables?

Are the variables case sensitive?

When is a local variable available?

By convention, lowercase characters are for which variable?

Uppercase characters are used for what variable?

What does the set command do?

What is the purpose of the unset command?

What does the PATH variable contain?

When the user types a command and then presses the ​Enter​ key, the ​PATH​ variable does what?

Where does the absolute path specifies a file?

Where does the relative path specifies a file?

If the $PATH variable were to be modify, how would an admin see this?

Which file customizes the shell when this starts?

There are two types of initialization files

How many users are affected by global initialization files?

How many users are affected by local initialization files?

Where are the global configuration files located at?

Where are the local configuration files located at?

When the bash is started as a login shell which file is executed first?

When ​bash​ is started as an interactive shell, it executes first which file:

What type of access do you need to modify the global configuration?

What type of files can a user modify?

What is the emacs?

By default, how many commands will be stored in the history file?