NTA-NET (UGC-NET) Computer Science & Applications (87) Operating Systems with Unix-Unix System Calls Study Material (Page 1 of 2)

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Unix Filters and Commands: Head

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Unix Filters and Commands

Pr

  • It is used to “paginate” or “columnate” files for the purpose of printing. It can also be used to compare two files by keeping them side by side.
Pr Command
  • Notice how we gave the command for , it means to make columns for the …

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Unix Filters and Commands: Grep, Egrep, Fgrep

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Grep

  • It is a command-line utility for searching plain-text data sets for lines that provide a match with a regular expression.
  • In fact, its name itself means globally search a regular expression and print. It is available on all UNIX like systems. The typical syntax used for “grep” is given as grep “search word” filename.
Grep Command
  • Using the “g…

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