What is the difference between egrep and grep

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Difference between egrep and grep Ask Question. Asked 8 years, 2 months ago. Active 3 months ago. Viewed 47k times. I have a question about grep and egrep in unix. Could somebody else kindly explain why? Improve this question. NoobEditor David Dai David Dai 2 2 gold badges 6 6 silver badges 11 11 bronze badges. Closely related: stackoverflow. Add a comment. Active Oldest Votes. With egrep you will do: ls egrep "mp4 avi" In this example acts like an OR command.

Improve this answer. Hi rook, thank you very much. It is very clear. I really really appreciate it. Nice explanation. In egrep ,? The grep allows to search patterns using regular expressions whereas egrep allows using extended regular expressions. Overall, egrep allows searching multiple patterns at a time using a single command easily. What is grep — Definition, Examples 2. What is egrep — Definition, Examples 3. Relationship Between grep and egrep — Outline of Association 4.

Difference Between grep and egrep — Comparison of Key Differences. The grep command allows the users to scan the documents and to display the result according to the given regular expression. Figure 1: Command Line Interface. Overall, grep command allows searching the given regular expression and displaying the matching lines. There are various grep implementations available in many operating systems. Learn how your comment data is processed.

Like: a? Differences Between grep, egrep and fgrep Some main differences between grep , egrep and fgrep can be highlighted as follows.

For this set of examples we are assuming the file on which operation is being performed to be: Linux grep Command Grep Command grep or Global Regular Expression Print is the main search program on Unix-like systems which can search for any type of string on any file or list of files or even output of any command. If you liked this article, then do subscribe to email alerts for Linux tutorials. If you have any questions or doubts?

Related Posts. The following statement is misleading: Matching either of the expression separated by ' '. This is the first site and last site where i found perfect explanation of these 3 commands of linux Reply.

I will correct this. Chad, Thanks for the tip, let me verify it. Gunjit, Could you check and correct it Reply. Got something to say? Join the discussion.