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→Using Variables in Shell Scripts
'''User-defined variables''' are variables which can be '''created by the user''' and exist in the session.<br>This means that no one can access user-defined variables that have been set by another user,<br>and when the session is closed these variables expire.<br>'''Reference:''' https://mariadb.com/kb/en/user-defined-variables/
Data can be stored and removed within a variable using an equal sign. <br>The '''read''' command can be used to prompt the user to enter data into a variable. Refer to the diagram on the right-side to see how user-defined variables are assigned data.
===Using Control Flow Statements in Shell Scripts===
