grep

Useful alias set up

Look in shell aliases

Command-line options (flags) I find useful

• -irn:
• -v:

Examples

Search only the current directory:

grep “string*” *

???

OPTIONS

• Pattern Syntax
  • -E, --extended-regexp: Interpret PATTERNS as extended regular expressions (EREs, see below).

grep -E PATTERN

Basic vs Extended Regular Expressions:

• In basic regular expressions the meta-characters ?, +, {, |, (, and ) lose their special meaning; instead use the backslashed versions ?, +, {, |, (, and ).