Search the contents of files using grep

Search directory contents recursively using grep

Use find to search for filename patterns

Search matching files by combining find and grep with xargs

Search the contents of a git repository with git grep

Show context around matches using grep

Search for basic patterns using grep

Use grep's extended regular expressions to find complex patterns

Search for optional patterns with grep OR

Specify line beginning and end in patterns using grep

Match classes of characters using bracket expressions with grep

Search with groups using grep

Find matches excluding a pattern with grep

Use Grep for Fast Search from the Command Line

By grouping your searches with parentheses, you can create even more complex searches. Grouping lets you separate out different parts of your regular expression, and apply special characters like +, ?, and * to groups of search terms.

grep

https://app.egghead.io/api/v1/lessons/tools-search-with-groups-using-grep/transcript

Use Grep for Fast Search from the Command Line

Search with groups using grep

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