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Difference grep, egrep and fgrep

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Old Unix and Linux 07-06-2007
ravind27 ravind27 is offline
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Difference grep, egrep and fgrep

Hi All,

Can anyone please explain me the difference between grep, egrep and fgrep with examples.

I am new to unix environment.. Your help is highly appreciated.

Regards,
ravi
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Old Unix and Linux 07-06-2007
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See man page

Code:
man grep fgrep egrep

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MySQL grep,egrep,fgrep

gerp Search a Pa tern from current directory.

egrep (grep -E in linux) is extended grep where additional regular expression metacharacters have been added like +, ?, | and ().

fgrep (grep -F in linux) is fixed or fast grep and behaves as grep but does not recognise any regular expression metacharacters as being special.
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