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【代码】Fedora36 : grep --help;man grep;info grep。

File: bash.info, Node: Top, Next: Introduction, Prev: (dir), Up: (dir)Bash FeaturesThis text is a brief description of the features that are present in theBash shell (version 5.1, 29 October 2020). The Bash home page ishttp://www.gnu.org/software/ba

File: sed.info, Node: Top, Next: Introduction, Up: (dir)GNU ‘sed’This file documents version 4.8 of GNU ‘sed’, a stream editor.Copyright © 1998-2020 Free Software Foundation, Inc.Menu:Introduction:: IntroductionInvoking sed::