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Grep - Dictionary Definition and Overview |
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Grep :
A Unix command for
searching files for lines matching a given regular
expression (RE). Named after the qed/{ed} editor
subcommand "g/re/p", where re stands for a regular expression,
to Globally search for the Regular Expression and Print the
lines containing matches to it. There are two other variants,
fgrep which searches only for fixed strings and egrep which
accepts extended REs but is usually the fastest of the three.
Used by extension to mean "to look for something by pattern".
When browsing through a large set of files, one may speak of
"grepping around". "Grep the bulletin board for the system
backup schedule, would you?" See also vgrep.
[{Jargon File]
Based on the Online Dictionary of Computing [Computer_Dictionary]:
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Grep : Global Regular Expression Print (Unix)
Based on Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) [Acronyms_Dictionary]:
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Grep : /grep/ vi. [from the qed/ed editor idiom g/re/p, where re stands
for a regular expression, to Globally search for the Regular Expression
{Unix">and Print the lines containing matches to it, via {Unix `grep(1)'] To
rapidly scan a file or set of files looking for a particular string or
pattern (when browsing through a large set of files, one may speak of
`grepping around'). By extension, to look for something by pattern.
"Grep the bulletin board for the system backup schedule, would you?" See
also vgrep.
[It has been alleged that the source is from the title of a paper "A
General Regular Expression Parser", but dmr confirms the g/re/p
etymology -ESR]
Based on Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) [Acronyms_Dictionary]:
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