foo2hbpl is an open source printer driver for printers that use the HBPL version 2 wire protocol for their print data, such as the Dell 1355, Fuji Xerox DocuPrint CM205, or the Xerox WorkCentre 6015. These printers are often erroneously referred to as winprinters or GDI printers. However, Microsoft GDI only mandates the API between an application and the printer driver, not the protocol on the wire between the printer driver and the printer. In fact, HBPL printers are raster printers that happen to use a very efficient wire protocol. HBPL is just one of many wire protocols that are in use today, such as Postscript, PCL, Epson, ZjStream, etc. This driver uses Ghostscript to perform all of the heavy lifting (image processing). There are five major components to the foo2hbpl printer driver: foo2hbpl2 (the page image to protocol conversion engine of the driver); foo2hbpl2-wrapper (a shell script (compatible with foomatic) that runs ghostscript and foo2hbpl in a pipeline); icc2ps (converts an ICM color profile to a Postscript CRD, which is then fed into Ghostscript before the users Postscript program); foomatic-db (foomatic database entries that describe the supported printers and their options so that printer spoolers know how to access the printer using foo2hbpl2-wrapper); and hbpldecode (a tool for developers to inspect HBPL streams).
Theorem Linker is a program used to visualize references between theorems in a paper written using LaTeX. Using a .tex document (and a .aux file, created by the LaTeX compiler), Theorem Linker will search through a paper, find theorems, and find references to other theorems within a theorem's "proof". It will then create a digraph in a .dot file (to be opened with programs such as Graphviz or OmniGraffle) that will display each theorem as a node, with directed edges to describe the relations between the theorems. A path highlighted in red describes the longest path in the graph. Theorem Linker will also create folders containing graphs to individually show relations of each theorem in a paper.
wminfo is a Window Maker dockable application that displays text format information using the plugin. The standard plugin is a shell script. The plugin writes the information to stdout, and wminfo captures the output and displays it row by row. Using the appropriate plugins, wminfo can display different information obtained from the system or from the Internet.
selector is a command line utility for dynamic string selection. It reads the content of the specified files, and as the user types a list of strings separated by ";" (or a regexp), the display is updated in real time to show only the lines containing all the said strings (or matching the regexp). This command was mainly designed as a way to search in the shell history, for which it is substantially more efficient than the standard readline ^R binding. With the -v option, it injects the selected line into the tty input buffer, hence allowing the user to edit the line and execute it as a standard command.
The Middleman System (mdm) is a set of utilities that help you parallelize your shell scripts. Its design is based on ideas from superscalar computer processors: it fetches commands as your script is running, detects potential interference between commands on the fly, and issues commands for execution in parallel as appropriate.
LMDBG is a collection of small tools for collecting and analyzing the logs of malloc/realloc/memalign/free function calls. Unlike many others, LMDBG does not provide any way to detect overruns of the boundaries of malloc() memory allocations, as this is not the goal. Like most other malloc debuggers, LMDBG allows detecting memory leaks and double frees. However, unlike others, LMDBG generates full stacktraces and separates the logging process from analysis, thus allowing you to analyze an application on a per-module basis.
The parallel project allows for simple parallel and distributed processing from shell scripts. In particular, the programs accept lines of shell code on the standard input and run these lines in parallel. The parallelism can be either on the local machine or on a cluster, if a small amount of time is taken to set up SSH. Additionally, the distributed version includes a degree of fault tolerance.
md5chk is a tool for creating MD5 sums. It was designed so that its output would be easy to use with command line shells. It guarantees that the MD5 sum is always "clean" of characters that would be misinterpreted by the shell and that special characters in the file names are always properly escaped.
The Mandos system allows computers to have encrypted root file systems and at the same time be capable of remote or unattended reboots. The computers run a small client program in the initial RAM disk environment which will communicate with a server over a network. All network communication is encrypted using TLS. The clients are identified by the server using an OpenPGP key that is unique to each client. The server sends the clients an encrypted password. The encrypted password is decrypted by the clients using the same OpenPGP key, and the password is then used to unlock the root file system.