I'd like to share a quick review of 7 essential grep commands that every software engineer should know and use in their daily work.
Commands covered:
Recursive search
Display line numbers
Display filenames
Invert match
Multiple Patterns
Context of matching lines
Use regular expressions
- Search for a pattern in all files recursively:
grep -r "pattern" /path/to/directory
- Display line numbers along with matching lines:
grep -n "pattern" filename
- Display only the names of files with matching lines:
grep -l "pattern" *
- Invert match (display non-matching lines):
grep -v "pattern" filename
- Search for multiple patterns:
grep -e "pattern1" -e "pattern2" filename
- Show the context of matching lines (before and after):
grep -C 3 "pattern" filename
- Use regular expressions for complex patterns:
grep -E "pattern1|pattern2" filename
If you're interested in viewing the examples, feel free to do so. Youtube Link
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