Variables (Linux)
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You'll explore introductory concepts related to variables in the Linux operating system.
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- A _________ is a reserved portion of memory that contains accessible information.
- A(n) _________ variable contains information that systems and programs access often.
- _________ are custom variables defined by users.
- ________ are useful when executing commands and creating new files and/or directories.
- Which command can be used to list environment variables and their current values?
- If a user prefixes the variable name with the $ shell meta-character, what command can be used to view the contents of a specified variable?
- Which of these variables should never be changed or modified?
- The name of a variable is known as the ____________.
- A variable identifier must start with an alphanumeric character
- What command is used to export user-defined variables to sub-shells?
- Which of these commands is used to list all exported environment and user-defined variables in a shell?
- An alias is used to create a shortcut to commands. For example "ll" is an alias for "ls -l". Aliases are stored in _______ variables.
