Task 3 of module 2

Start the expression to populate the variable with “cat $1” which is the command line filename input.

can someone tell me what this means? The variable is already populated right?

The “cat $1” is the first command line argument.

for example :-
if you run ./abcd.sh X Y Z, then X is the first cmd line arg ($1), Y is the second cmd line arg ($2) and so on…

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