grep tutorial - The Diigo Meta page

• 06 May 16
  

  worldsendless

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• 31 Dec 15
  

  danielbermond

  Tutorial sobre o commando grep focando em regular expressions.

  linux tutorial

• 20 Jan 15
  

  Kaushal Bondada
  • We now discuss egrep syntax as opposed to grep syntax. Ironically,  despite the origin of the name (extended), egrep actually has less functionality as it is designed for compatibility with the traditional egrep. A better way to do an extended "grep" is to use grep -E  which uses extended regular expression syntax without loss of functionality.
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  Murray Smithers

  Folders Languages Best favourites Bash Commands Grep Tutorial

• 10 Jul 13
  

  maddy03
  • "." matches exactly one character.
  • the expression ".*" matches any string,
  • An expression surrounded by "escaped" parentheses is treated by a single character.
  • The $ character matches the end of the line. The ^ character matches the beginning of the  line.
  • The expression   where n is a number, matches the contents of the n'th set of parentheses in the expression
  • The following characters are considered special and need to be "escaped": 

    ?  \  .  [  ]  ^  $
  • Most special characters lose their meaning inside square brackets
  • single quotes are the safest to use, because they protect your regular expression from the shell.
  • When should you use single quotes ? the answer is this: if you  want to use shell variables, you need double quotes.

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  MD. Sahib Bin Mahboob

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  Grep command is a really full feature find for unix, and thus mac termina, and this page describes it well with advanced examples

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  Alberto Fernandez

  grep is not only one of the most useful commands, but also, mastery of grep opens the gates to mastery of other tools such as awk , sed and perl .

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• 25 Jun 08
  

  Mark Gardner

  grep linux tutorial reference Unix bash regex

• 27 May 08
  

  Useful information mostly written by me, the conspicuous exception being the bash manpage ... Intro to Unix UNIX command summary grep tutorial powerful search tool

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