rzip
TLDR
Compress file
$ rzip [file]
Compress keeping original$ rzip -k [file]
Decompress file$ rzip -d [file.rz]
Set compression level$ rzip -[9] [file]
Verbose output$ rzip -v [file]
SYNOPSIS
rzip [options] files...
DESCRIPTION
rzip is a compression program designed for large files. It uses a rolling-window algorithm similar to rsync, then bzip2, achieving good compression on files with repeated sequences.
PARAMETERS
-d, --decompress
Decompress.-k, --keep
Keep input files.-f, --force
Force overwrite.-0 to -9
Compression level.-v, --verbose
Verbose output.-L, --level n
Compression level.-o file
Output file.
EXAMPLES
$ # Compress file
rzip largefile.tar
# Keep original
rzip -k database.sql
# Maximum compression
rzip -9 bigdata.csv
# Decompress
rzip -d file.rz
# Force overwrite
rzip -f -k important.dat
# Verbose
rzip -v -9 archive.tar
rzip largefile.tar
# Keep original
rzip -k database.sql
# Maximum compression
rzip -9 bigdata.csv
# Decompress
rzip -d file.rz
# Force overwrite
rzip -f -k important.dat
# Verbose
rzip -v -9 archive.tar
CHARACTERISTICS
- Excellent for large files with repetition
- Uses rolling checksum (rsync algorithm)
- Final compression with bzip2
- Memory-intensive
CAVEATS
High memory usage. Best for files >10MB. Cannot decompress standard gzip/bzip2.
HISTORY
rzip was written by Andrew Tridgell (rsync author) to efficiently compress large files with long-distance redundancy.
