hey

Installation

Pre-built binaries are available at https://github.com/y9c/hey/releases/tag/latest.

To install or upgrade hey, use the provided install.sh script:

curl -sfL https://raw.githubusercontent.com/y9c/hey/master/install.sh | sh

This script will automatically detect your system, download the appropriate binary, and install it to a suitable location in your PATH.

Commands showcase

• open: Open file in server with browser.
• tsv: Preview tsv file in a pretty way.
• colname: Transpose and format table, showing column names and initial data rows.
• fastq: Colorize and visualize FASTQ files, including quality scores and adapter detection.
• sam (sam2pairwise): Convert SAM records into pairwise alignment format with highlighting.
• tag (get tag): Extract specified tags from SAM records from stdin.
• stats: Concatenate and transpose columns from files into a matrix.
• wc: Count lines, words, and characters in files (gzip supported, BGZF-aware and parallel).
• rname: Identify instrument, flow cell type, and lane from FASTQ read names.
• rc: Compute the reverse complement of DNA sequences.
• doc: Print a machine-readable description of the CLI. Use hey doc --json for a structured reference (commands, flags, defaults, aliases, argument contract), hey doc --markdown for docs, and hey doc --one for a compact list. Ideal for AI agents and documentation generators.