Updated: 13 January 2023
Find all occurrences of foo in directories and files recursively, from the current directory
grep -irn --exclude-dir=dir --text foo * -i: case insensitive -r: recursive but don't follow symlinks -n: show line number --text: treat binary files as text
Interpret PATTERNS as --fixed-strings, not regular expressions
grep -F './dir/dir2' file.txt