Free pipe software for linux

Zip is a compression and file packaging utility for Unix, VMS, DOS, OS/2, Windows 9x/NT, Amiga, Atari, Macintosh, BeOS, SMS/QDOS, MVS, VM/CMS, and others.
Zip is analogous to a combination of the Unix commands tar(1) and compress(1) and is compatible with PKWAREs PKZIP and Nico Maks WinZip. Its part of the Info-ZIP project.
Main features:
- creating zipfiles in a pipe or on a device
- VMS and OS/2 extended file attributes
- conversion between Unix, MS-DOS and Macintosh text file formats
- the ability to run on most of your favorite operating systems.
Enhancements:
- fixed -R operation to match the supplied file patterns in all recursed subdirectories, like PKZIP 2.04 "-p -r" (or PKZIPC 4+ "-recurse")
- handle cases where -x, -R, and -i patterns are mixed
- new example C-Sharp code for using DLLs
- added some directory-search speedups
- fixed bug when encrypting large uncompressible files
- fixed Windows NTFS time problem
- fixed VMS logical name parse problem
- added VMS DEBUG option
- updated VMS help
- fixed selection of files to delete by date
- added -MM option where each input file pattern must match at least one file and all input files must be readable
- added check for when Zip tries to exceed seek limit in output file
- minor changes to compile with Visual C++ 2005
- added support for Unix FIFOs (named pipes)
- other minor fixes

xmmspipe is a plugin for XMMS that enables it to be controlled by sending strings to a named pipe (FIFO). When you enable the plugin, XMMS can be commanded by sending strings to $HOME/.xmms/inpipe, for example,
echo play_pause > ~/.xmms/inpipe
will cause XMMS to pause or play.
Since version 0.5.0, it is possible to setup an output pipe, and query XMMS for information. For example, sending "report title" to the input pipe will cause the current songs title to be printed on the output pipe.
Included is a demo program called "fade", that shows how to use the plugin to fade the current song and advance to the next one. It requires the output pipe to be be enabled (via the Config window).
The Infopipe plugin does output pipes a little differently.
When I first wrote this plugin, I didnt know about other programs that I couldve used to control XMMS with shell scripts, such as xmmsctrl or xmms-shell. However, Ive kept xmmspipe alive because pipes may be preferable in some situations:
The pipe automatically inherits the security features of the underlying filesystem (e.g. you could change its permissions so that only users of a particular group can control XMMS).
In many programming languages, writing to a pipe is easier than executing programs, making it easier to build programs to control XMMS.
The plugin can call internal XMMS functions which means it can have more functionality than programs relying on the xmms_remote_* functions alone. For example, XMMSPipe can load/save playlists.
Sometimes I think XMMS itself should just be an MP3-playing daemon that interfaces with the outside world exclusively through pipes (one for input, at least one for output). This would allow a lot more flexibility, e.g. the GUI could be arbitrary and playlists could be managed by an external program. (It would work in the same way gkrellm works with files in /proc.) Also, the code would be simpler because it only has to worry about reading various audio formats and playing them. It wouldnt have to deal with window managers, X, etc.
Enhancements:
- Added playlist_move command due to Graeme Yeo

Pipepanic is a pipe connecting game using libSDL. It is playable on Linux PCs and the Sharp Zaurus. Connect as many different shaped pipes together as possible within the time given.

Comes with built-in help, is primarily mouse/stylus driven and can be played in different resolutions and orientations.

FlowFlowMania project is a remake of the classical puzzle game Pipe Mania on Linux with GP2X compliance.
Enhancements:
- new skins mechanism enhancement
- new type of piece : the logical checkpoints !
- new grahical representation of special pieces ("logical" and "mandatory" with a layer)
- new test levels
- and as always some bug fix ...

Progress is a utility used in a pipe to report progress of data transfer to standard error. Command-line arguments tells to specify how frequently to report, what character to use to report, and how much buffering to do.
Enhancements:
- February 9, 2003
- progress 1.0
- Initial announcement

Pipebench shows the current throughput and amount of data going through a pipe. It can be used to show the progress of a large md5sum process: cat bigfile | pipebench | md5sum.

Pipebench measures the speed of a pipe, by sitting in the middle passing the data along to the next process. Works on at least Linux, OpenBSD, NetBSD, Solaris and x86, Alpha, HPPA, Sparc and Sparc64.

Compiling

Just type make to compile.

Type make install to have pipebench be installed in /usr/local/bin

Chart::XMGR is a Perl object for displaying data via XMGR.

SYNOPSIS

use Chart::XMGR;

xmgr($a, { SYMBOL => plus};

use Chart::XMGR ();

$xmgr = new Chart::XMGR;
$xmgr->line($pdl);

$pdl->$xmgr->line;

xmgr($pdl, { LINESTYLE => dotted });

Provides a perl/PDL interface to the XMGR plotting package. Can be used to plot PDLs or Perl arrays.

A simple function interface is provided that is based on the more complete object-oriented interface.

The interface can be implemented using either anonymous pipes or named pipes (governed by the module variable Chart::XMGR::NPIPE). If named pipes are used ($NPIPE = 1) XMGR can be controlled via the pipe and buttons are available for use in XMGR. If an anonymous pipe is used XMGR will not accept button events until the pipe has been closed.

Currently the named pipe option can not support data sets containing 3 or more columns (I havent worked out how to do it anyway!). This means that only TYPE XY is supported. For anonymouse pipe 3 or more columns can be supplied along with the graph type.

The default option is to use the named pipe.