How to Use if-else in Shell Scripts | Shell Scripting Tutorial for Beginners

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A shell script is a computer program designed to be run by the Unix shell, a command-line interpreter. The various dialects of shell scripts are considered to be scripting languages. A shell usually interprets a single line of input, but we can also create a file containing a number of lines of commands to be interpreted. This file is a program known as a shell script. The program can also contain control structures (if-then, loops). Shell scripts allow a sequence of commands to be executed automatically .What is variable in shell script?
What are the different types of variables used in shell script?
How do you declare a variable in shell?
What is $$ variable in bash?

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@1:50 You should use indentation in line 7 and 9.

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