fgrep

fgrep

The fgrep command in Linux is a fast version of the grep command. It is used to search for a pattern in a file, but it does not read the entire file into memory. This makes it faster than grep, especially for large files.

The fgrep command is used in the following syntax:

fgrep [options] pattern file_name

The pattern is the string that you want to search for. The file_name is the name of the file that you want to search.

The options can be used to specify the following:

• -c: Counts the number of matches.

• -i: Ignores case.

• -v: Invert the match.

• -n: Prints the line number of each match.

For example, the following command searches for the pattern "hello" in the file file.txt:

fgrep hello file.txt

This command will search for the pattern "hello" in the file file.txt and print any lines that contain the pattern.

The fgrep command is a fast and efficient way to search for a pattern in a file. It is a valuable command to know, especially if you need to search large files.

Here are some additional things to note about the fgrep command:

• The fgrep command is faster than the grep command for large files.

• The fgrep command does not read the entire file into memory.

• The fgrep command is a simple and easy-to-use command.

I hope this helps! Let me know if you have any other questions.

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