anewer appends lines from stdin to a file if they don't already exist in the file. This is a rust version of https://github.com/tomnomnom/anew

A command-line tool for deduplicating entries in a file or stream.

A uniq-like tool for removing nearby repeated lines in a file"

uni is a command to make unique text like uniq command.

Simple uniq implementation in Rust that doesn't require sorting

Simple Command Line Utility to remove duplicates from stdio or a file.