uniq - filter out repeated lines
$ uniq [--version] [INPUT] [OUTPUT]
Filter out repeated lines from INPUT (or standard input) and write to OUTPUT (or standard output).
--help
: Display help message and exit--version
: Print version# Filter out repeated lines from README.md and write to standard output
$ uniq README.md
# Filter out repeated lines from README.md and write to UNIQUE.md
$ uniq README.md UNIQUE.md