lzop – file compressor favoring speed over compression ratio

lzop is a file compressor which is very similar to gzip. lzop uses the LZO data compression library for compression services, and its main advantages over gzip are much higher compression and decompression speed (at the cost of some compression ratio). Typically, text such as source code or English is compressed into 40-50% of the original size, and large files usually compress much better than small ones.

The software reduces the size of the named files. Whenever possible, each file is compressed into one with the extension .lzo, while keeping the same ownership modes, access and modification times. If no files are specified, or if a file name is “-“, lzop tries to compress the standard input to the standard output. lzop will only attempt to compress regular files or symbolic links to regular files. In particular, it will ignore directories.

lzop is one of the fastest compressors available.

lzop is free and open source software.

Features include:

  • lzop was designed with the following goals in mind:
    • speed (both compression and decompression).
    • reasonable drop-in compatibility to gzip.
    • portability.
  • General functionality and behaviour has been modelled very closely after gzip. The main differences between lzop and gzip are:
    • files compressed by lzop will have the suffix `.lzo’.
    • lzop does not delete the input file(s) by default.
  • Deal with files in many ways:
    • Backup mode.
    • Single file mode.
    • Pipe mode.
    • stdout mode.
    • Archive mode.

Support: Documentation
Developer: Markus F.X.J. Oberhumer
License: GNU General Public License v2.0

lzop is written in C. Learn C with our recommended free books and free tutorials.

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