[CentOS] how to do repetetive command in shell

[Pintér Tibor]

> USER1="roland"
> USER2="dany"
> USER3="kevin"
> 
> 
> cp -r /opt/$USER1/test /backup/$USER1
> cp -r /opt/$USER2/test /backup/$USER2

$ for user in one two three four; do echo $user; done
one
two
three
four

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