unzstd(1)

NAME

   zstd, unzstd, zstdcat - Compress or decompress .zst files

SYNOPSIS

   zstd [OPTIONS] [-|INPUT-FILE] <OUTPUT-FILE>

   unzstd is equivalent to zstd -d
   zstdcat is equivalent to zstd -dc

DESCRIPTION

   zstd is a fast lossless compression algorithm.  It is based on the LZ77
   family, with FSE & huff0 entropy stage.  zstd offers compression  speed
   > 200 MB/s per core.  It also features a fast decoder, with speed > 500
   MB/s per core.

   zstd command line is  generally  similar  to  gzip,  but  features  the
   following differences :
    - Original files are preserved
    - By default, zstd file1 file2 means : compress file1 into file2.
        Use  -m  command  if you want : compress file1 into file1.zstd and
   file2 into file2.zst
    - By  default,  when  compressing  files,  zstd  displays  advancement
   notification and result summary.
        Use -q to turn them off

   zstd supports the following options :

OPTIONS

   -#
           # compression level [1-19](default:1)

   -d
           decompression

   -f
           overwrite output without prompting

   -m, --multiple
           multiple files mode
           In  this  mode,  multiple  files  on  the  command  line  means
          compression or decompression of each named file
           Notifications are also turned off by default

   -D
           Use  next  file  as   dictionary   content   for   compress   /
          decompression

   -h/-H, --help
           display help/long help and exit

   -V, --version
           display Version number and exit

   -v, --verbose
           verbose mode

   -q, --quiet
           suppress  warnings and notifications; specify twice to suppress
          errors too

   -c
           force write to standard output, even if it is the console

   -z
           force compression

   -b#
           benchmark file(s) using compression level #

   -i#
           iteration loops [1-9](default : 3), benchmark mode only

BUGS

   Report bugs at:- https://github.com/facebook/zstd/issues

AUTHOR

   Yann Collet

Opportunity

Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.

Education

Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.