Hitchhiker's Guide to the Internet is a German introduction to the technical aspects of the Internet. This book explains both the low-level protocols IP, ICMP, TCP, and UDP and the high-level protocols SMTP, POP3, IMAP4, NNTP, HTTP, Gopher, FTP, IRC, DICT, Finger, Daytime, DNS, and Whois.
The Heirloom Toolchest is a collection of standard Unix utilities. It was derived from original Unix material released as open source by Caldera and Sun, and contains multiple versions of each utility corresponding to SVID3/SVR4, SVID4/SVR4.2MP, POSIX.2-1992/SUSV2, POSIX.1-2001/SUSV3, and 4BSD (SVR4 /usr/ucb). It processes lines of arbitrary length and in many cases binary input data, supports characters in UTF-8 and many East Asian encodings, and contains more than 100 individual utilities including bc, cpio, diff, ed, file, find, grep, man, nawk, oawk, pax, ps, sed, sort, spell, and tar. Extensive documentation is included.
geo-* is a set of tools for geocaching, including tools for accessing the www.geocaching.com, opencaching.com, opencaching.us, and navicache.com websites, tools for geocoding addresses and creating maps, and tools for manipulating Mapopolis place guide data. The focus of these tools is to provide a command line driven environment.
Burn.awk is a character-mode, dialog-based frontend to the cdrtools burning software. It is only designed to burn data CD-R or CD-RW, but does it well. Despite its small size it is quite versatile. It supports SCSI writers (and IDE too, through Linux ide-scsi gateway), SCSI or IDE CDROMs, limited auto-detection, ISO image extraction, mastering and burning, direct burning of a directory, direct CD-to-CD copy, tray ejection and closing, CD-RW blanking, configuration dialogs, and saving.
gtkdialog is a GUI creation utility that can be used with an arbitrary interpreter. It enables the programmer to describe a graphical user interface in a simple XML language, and create callbacks with any interpreter that supports either files, standard I/O, or environment variables. It can be called as an external program from the interpreter, but can be used as a stand-alone framework for the application as well. Stand-alone, bash, and awk examples are provided.
ECB is a source code browser for (x)emacs. It displays a couple of windows that can be used to browse directories, files, and file contents like methods and variables. It supports source code parsing for languages like Java, C, C++, Elisp, Scheme, Perl, TeX, LaTeX, etc. In addition, it offers an (optional) permanent "compile window" at the bottom of the emacs frame, which is used to display all help and compile output. The rest of the frame is called the "edit area", which can be divided into several edit windows that are used for editing the sources. Deleting some of the edit windows neither destroys the compile window nor the browsing windows. It requires the CEDET suite.