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

The basic symbols of the system ($,! , #,', ", >, 2 >, 2 > >, 2 >, 2 > >)

A, > standard output redirection symbol

B, > > standard output append redirection symbol

C, 2 > error output redirection symbol

D, 2 > > error output append redirection symbol

9. Less than the symbol (

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