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  3. Introduction to Shell

Exercise

How else does the shell store information?

The other kind of variable is called a shell variable, which is like a local variable in a programming language.

To create a shell variable, you simply assign a value to a name:

training=seasonal/summer.csv

without any spaces before or after the = sign. Once you have done this, you can check the variable's value with:

echo $training

seasonal/summer.csv

Instructions 1/2

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  • 1

    Define a variable called testing with the value seasonal/winter.csv.

  • 2

    Use head -n 1 SOMETHING to get the first line from seasonal/winter.csv using the value of the variable testing instead of the name of the file.