git-pack-refs(1)


NAME

   git-pack-refs - Pack heads and tags for efficient repository access

SYNOPSIS

   git pack-refs [--all] [--no-prune]

DESCRIPTION

   Traditionally, tips of branches and tags (collectively known as refs)
   were stored one file per ref in a (sub)directory under $GIT_DIR/refs
   directory. While many branch tips tend to be updated often, most tags
   and some branch tips are never updated. When a repository has hundreds
   or thousands of tags, this one-file-per-ref format both wastes storage
   and hurts performance.

   This command is used to solve the storage and performance problem by
   storing the refs in a single file, $GIT_DIR/packed-refs. When a ref is
   missing from the traditional $GIT_DIR/refs directory hierarchy, it is
   looked up in this file and used if found.

   Subsequent updates to branches always create new files under
   $GIT_DIR/refs directory hierarchy.

   A recommended practice to deal with a repository with too many refs is
   to pack its refs with --all once, and occasionally run git pack-refs.
   Tags are by definition stationary and are not expected to change.
   Branch heads will be packed with the initial pack-refs --all, but only
   the currently active branch heads will become unpacked, and the next
   pack-refs (without --all) will leave them unpacked.

OPTIONS

   --all
       The command by default packs all tags and refs that are already
       packed, and leaves other refs alone. This is because branches are
       expected to be actively developed and packing their tips does not
       help performance. This option causes branch tips to be packed as
       well. Useful for a repository with many branches of historical
       interests.

   --no-prune
       The command usually removes loose refs under $GIT_DIR/refs
       hierarchy after packing them. This option tells it not to.

BUGS

   Older documentation written before the packed-refs mechanism was
   introduced may still say things like ".git/refs/heads/<branch> file
   exists" when it means "branch <branch> exists".

GIT

   Part of the git(1) suite





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.