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    Autoconf is an extensible package of M4 macros that produce shell scripts to automatically configure software source code packages. These scripts can adapt the packages to many kinds of UNIX-like systems without manual user intervention.


    Automake is a tool for automatically generating files compliant with the GNU Coding Standards.


    Bash, or Bourne Again Shell is a sh-compatible shell that incorporates useful features from the Korn shell (ksh) and C shell (csh). Bash provides users with a command-line interpreter that provides a traditional interface via a text window. It is widely used as the GNU operating system shell and the default shell on Linux and Mac OS X.


    Bison is a general-purpose parser generator that converts an annotated context-free grammar into a deterministic LR or generalized LR (GLR) parser employing LALR(1) parser tables.


    bzip2 is a data compressor for z/OS Unix. It compresses files to within 10% to 15% of the best available techniques of statistical compressors, while being around twice as fast at compression and six times faster at decompression. bzip2 is an open source application available for most operating systems, so compressed files can be decompressed on most platforms.


    cURL is an open source tool that can transfer data from and to servers by using one of the supported protocols (HTTP, HTTPS, FTP, FTPS, TFTP, DICT, TELNET, LDAP, or FILE). This command works without user interaction. cURL is a command-line UNIX application and runs in the z/OS UNIX System Services environment.


    CVS is a version control system. Using it, you can record the history of sources files, and documents.


    Diffutils is a package of several programs related to finding differences between files.


    The basic directory searching utilities of the GNU operating system. These programs are typically used in conjunction with other programs to provide modular and powerful directory search and file locating capabilities to other commands.


    Groff is the GNU replacement for the troff and nroff text formatters.


    Gzip is a popular data compression program.


    libssh2 is a open-source software library intended to allow software developers access to the SSH-2 protocol in an easy-to-use self-contained package.


    Make is a tool which controls the generation of executables and other non-source files of a program from the program's source files.


    Midnight Commander is a file manager for free operating systems.


    The mktemp utility takes the given filename template and overwrites a portion of it to create a unique filename.


    Is a UNIX text editor for programmers.


    Perl is a port of the Perl (version 5.8.7) scripting language to the z/OS UNIX System Services platform. Perl is general-purpose programming language used on UNIX and other platforms. This port of Perl to the z/OS platform offers enhancements, in that it is preconfigured and precompiled, designed to address the ASCII/EBCDIC conversion, and provide Unicode support.


    PHP (recursive acronym for PHP: Hypertext Preprocessor) is an open-source server-side scripting language for creating dynamic Web pages for e-commerce and other Web applications. A dynamic Web page is a page that interacts with the user, so that each user visiting the page sees customized information.


    pkg-config is a helper tool used when compiling applications and libraries.


    Python is a widely used general-purpose, high-level programming language. Its design philosophy emphasizes code readability, and its syntax allows programmers to express concepts in fewer lines of code than would be possible in languages such as C++ or Java.


    sed (stream editor) isn't an interactive text editor. Instead, it is used to filter text, i.e., it takes text input, performs some operation (or set of operations) on it, and outputs the modified text. sed is typically used for extracting part of a file using pattern matching or substituting multiple occurrences of a string within a file.


    sudo is an open source tool that allows a system administrator to delegate authority in order to give certain users (or groups of users) the ability to run some (or all) commands as a superuser or another user, while providing an audit trail of the commands and their arguments.


    Tcl (Tool Command Language) is a very powerful but easy to learn dynamic programming language, suitable for a very wide range of uses, including web and desktop applications, networking, administration, testing and many more.


    UnZip is an extraction utility for archives compressed in .zip format.


    Webalizer is a fast, free web server log file analysis program.


    GNU Gzip is a popular data compression program.


    A free, general-purpose, lossless data-compression library for use on virtually any computer hardware and operating system.