Shulou(Shulou.com)06/02 Report--

Assessment content

Test []

Echo-e

For cycle

Train of thought

Delete command cannot be executed when the user is not root

Prompt when the input is blank

Prompt if input does not exist

Delete when the user is established

The user does not exist when it is not established.

Edit a file

Echo-e font color setting, you can query font color table

When ordinary users

When the file is empty

When the file does not exist

View bulk users who delete the list

When it was established

When it is not established

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