| Options | Description |
|---|
| -c | This prints only a count of the lines that match a pattern |
| -h | Display the matched lines, but do not display the filenames. |
| -i | Ignores, case for matching |
| -l | Displays list of a filenames only. |
| -n | Display the matched lines and their line numbers. |
| -v | This prints out all the lines that do not matches the pattern |
| -e exp | Specifies expression with this option. Can use multiple times. |
| -f file | Takes patterns from file, one per line. |
| -E | Treats pattern as an extended regular expression (ERE) |
| -w | Match whole word |
| -o | Print only the matched parts of a matching line, with each such part on a separate output line. |
| -A n | Prints searched line and nlines after the result. |
| -B n | Prints searched line and n line before the result. |
| -C n | Prints searched line and n lines after before the result. |
1grep -i "UNix" anand.txt
2grep -c "unix" anand.txt
3grep -l "unix" *
4# Regular expression pattern
5grep "^unix" anand.txt
6grep "os$" geekfile.txt
- grep -r pattern dir – search recursively for pattern in dir
