![]() However, it is now the POSIX standard to use standard grep with special option flags ( -E or -F). Many systems still include the binaries for these variants. This means that it takes the search pattern as it is for searching and thus it is faster than grep.Īlthough, you may still see egrep and fgrep in the wild, their status is deprecated. The fgrep command on the other hand works on fixed string instead of a regex. The egrep command allows the use of extended regex. See the difference between basic and extended regex. If you want more complex search, you need to use extended regular expression. But that's not the complete truth.īy default, the grep command works on basic regular expression. egrep allows the use of extended regex and fgrep doesn't allow regex at all.Īll this will make more sense soon when I explain them with examples. The e in egrep stands for extended and the f in fgrep stands for fixed. What is egrep and fgrep? What is the difference between grep, egrep and fgrep? In this tutorial, I'll discuss these grep variants explaining the difference and similarities. It may happen that you may come across terms like egrep and fgrep in some internet forum discussion and wonder what are these commands and whether they are related to grep. In our case, we’re looking for the word VPS in the sample file called Hostinger.txt: grep VPS Hostinger.I believe you are already familiar with the grep command.
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