7 Essential grep command for software engineers

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
Co…


This content originally appeared on DEV Community and was authored by Hash

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

  1. Search for a pattern in all files recursively: 
grep -r "pattern" /path/to/directory
  1. Display line numbers along with matching lines: 
grep -n "pattern" filename
  1. Display only the names of files with matching lines: 
grep -l "pattern" *
  1. Invert match (display non-matching lines): 
grep -v "pattern" filename
  1. Search for multiple patterns: 
grep -e "pattern1" -e "pattern2" filename
  1. Show the context of matching lines (before and after): 
grep -C 3 "pattern" filename
  1. Use regular expressions for complex patterns: 
grep -E "pattern1|pattern2" filename

If you're interested in viewing the examples, feel free to do so.

Best
HASH


This content originally appeared on DEV Community and was authored by Hash


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