filechan - file-writing backend for InterNetNews
filechan [ -d directory ] [ -f fields ] [ -m mapfile ] [ -p pidfile ]
Filechan reads lines from standard input and copies certain fields in each line into files named by other fields within the line. Filechan is intended to be called by innd(8) as a channel feed. (It is not a full exploder and does not accept commands; see newsfeeds(5) for a description of the difference and buffchan(8) for an exploder program.) Filechan input is interpreted as a set of lines. Each line contains a fixed number of initial fields, followed by a variable number of filename fields. All fields in a line are separated by whitespace. The default number of initial fields is one. For each line of input, filechan writes the initial fields, separated by whitespace and followed by a newline, to each of the files named in the filename fields. When writing to a file, filechan opens it in append mode and tries to lock it and change the ownership to the user and group who owns the directory where the file is being written.
-f The ``-f'' flag may be used to specify a different number of fields. -d By default, filechan writes its arguments into the directory /var/spool/news/out.going. The ``-d'' flag may be used to specify a directory the program should change to before starting. -p If the ``-p'' flag is used, the program will write a line containing its process ID (in text) to the specified file. If filechan is invoked with ``-f 2'' and given the following input: news/software/b/132 <email@example.com> foo uunet news/software/b/133 <firstname.lastname@example.org> uunet munnari comp/sources/unix/2002 <email@example.com> foo uunet munnari Then the file foo will have these lines: news/software/b/132 <firstname.lastname@example.org> comp/sources/unix/2002 <email@example.com> the file munnari will have these lines: news/software/b/133 <firstname.lastname@example.org> comp/sources/unix/2002 <email@example.com> and the file uunet will have these lines: news/software/b/132 <firstname.lastname@example.org> news/software/b/133 <email@example.com> comp/sources/unix/2002 <firstname.lastname@example.org> Because the time window in which a file is open is very small, complicated flushing and locking protocols are not needed; a mv(1) followed by a sleep(1) for a couple of seconds is sufficient. -m A map file may be specified by using the ``-m'' flag. Blank lines and lines starting with a number sign (``#'') are ignored. All other lines should have two host names separated by a colon. The first field is the name that may appear in the input stream; the second field names the file to be used when the name in the first field appears. For example, the following map file may be used to map the short names above to the full domain names: # This is a comment uunet:news.uu.net foo:foo.com munnari:munnari.oz.au
Written by Robert Elz <email@example.com>, flags added by Rich $alz <firstname.lastname@example.org>. This is revision 1.19, dated 1996/10/29.
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 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.
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.
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.