grep command in linux

The grep command stands for "global regular expression print", is a powerful tool in linux operating systems used for searching and manipulating text patterns in files. Functionality is as below - Search Text Patterns: grep searches for lines in a file (or files) that match a specified text pattern. - Output Matching Lines: grep outputs the lines that contain the matching text pattern. Sample grep command is below

grep "pattern" filename

grep "error" /var/log/syslog