pcp-free(1)


NAME

   pcp-free - report on free and used memory in the system

SYNOPSIS

   pcp [pcp options] free [-bkmgoltV] [-c count] [-s interval]

DESCRIPTION

   pcp-free  gives  a summary display of the total amount of free and used
   physical memory and swap in the system, as well as the caches  used  by
   the kernel.

   When  invoked  via  the  pcp(1)  command,  the -h/--host, -a/--archive,
   -O/--origin, -s/--samples,  -t/--interval,  -Z/--timezone  and  several
   other pcp options become indirectly available.

   Options
   The  -b/--bytes  switch  displays  the  amount  of memory in bytes; the
   -k/--kilobytes switch (set by default) displays it  in  kilobytes;  the
   -m/--megabytes switch displays it in megabytes.

   The -t/--total switch displays a line containing the totals.

   The -o switch disables the display of a "buffer adjusted" line.  If the
   -o option is not specified, free subtracts buffer memory from the  used
   memory and adds it to the free memory reported.

   The  -s/--interval  switch  activates  continuous polling delay seconds
   apart.  You may specify any floating point number for delay, or  indeed
   any  valid pmParseInterval(3) specification, which includes microsecond
   resolution delay times.  This can  be  used  in  conjunction  with  the
   -c/--samples option to terminate the display after count iterations.

   The -l switch shows detailed low and high memory statistics.

   The  current  version of pcp-free can be queried using the -V/--version
   option.

NOTES

   pcp-free is inspired by the free(1) command and aims to be command line
   and output compatible with it.

   The shared memory column should be ignored; it is obsolete.

SEE ALSO

   pcp(1), free(1), PCPIntro(1), pmParseInterval(3) and environ(7).





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.