Shell script usage of some basic statements

A. For statement

1. Use the For statement to add users in bulk

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2. Use the For statement to check if the host can ping properly

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Two: While statement

1. Use the While statement to add users by user name rule

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2. Using the while statement to write a guess price script

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Three: Case statement

1. Writing a test character type script with a case statement

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2. Writing a service state control script using case statements

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Shell script usage of some basic statements