It can identify sequencing data files such as SAM, BAM, and CRAM; variant calling data files such as VCF and BCF; index files used to index these data files; and compressed versions of many of them.
For each FILE given, htsfile prints a description of the file format determined, using similar keyword conventions to file(1): "text" indicates a textual file that can probably be viewed on a terminal; "data" indicates binary data; "sequence", "variant calling", and "index" indicate different categories of data file. When it can be identified, the name of the particular file format (such as "BAM" or "VCF") is printed at the start of the description.
When used to view file contents as text, htsfile can optionally show only headers or only data records, but has no other filtering capabilities. Use samtools or bcftools if you need more extensive viewing or filtering capabilities.
The following options are accepted:
Instead of identifying the specified files, display a textual representation of their contents on standard output.
By default, --view refuses to display files in unknown formats. When --verbose is also given, the raw contents of such files are displayed, with non-printable characters shown via C-style "\\x" hexadecimal escape sequences.
Display data file headers only. Implies --view.
When viewing files, display data records only.
Display additional warnings and diagnostic messages. Using --verbose repeatedly further raises the verbosity.
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