Difference grep, egrep and fgrep

ravind27 · July 6, 2007, 4:43am

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

ennstate · July 6, 2007, 5:27am

See man page

man grep fgrep egrep

jagadeeb · June 14, 2009, 7:37am

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.