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Editor to share with you the use of linux test command to check whether the conditions are established, I hope you will learn a lot after reading this article, let's discuss it together!

The test command is used to check whether a condition is true, and it can be tested in terms of values, characters, and files.

The test command expects to find a parameter on the command line, and when shell does not assign a value to the variable, it is treated as empty. This means that when processing a script, test will report the error once the parameter that the script is looking for does not exist.

Syntax format: test [expression]

Common parameters:

-eq (=) equals true-ne (! =) not equal to true-gt (>) greater than true-ge (> =) greater than or equal to true-lt (

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