Free posix software for linux

posh is a stripped-down version of pdksh with several improvements that aims for compliance with Debians /bin/sh policy, and few extra features.

Currently, Debians policy is to adhere to POSIX with the exception of supporting echo -n, so posh strives toward compliance with SUSv3 (with the exception of echo -n).

Pliant is a new generation language, which is modular, reflexive, and dynamically-compiled. It looks like a merging of typed Lisp and C.
The programming environment includes HTTP, FTP, SMTP, POP3, DNS servers and clients, a database engine, a multi-forum administration tool, etc.
Pliant runs on Linux, POSIX, and Windows platforms or as a standalone OS on top of the Linux kernel.
Enhancements:
- Many improvements in the young Pliant UI interface.
- Unsatisfying patch to fix Firefox 1.5 related problems.
- A tiny VNC client applet (todo: put scripts asside).

Swbis provides a POSIX packaging implementation with useful extensions.
Swbis aims to implement the POSIX packaging standard with useful extensions. Working utilities include swpackage(8), swverify(8), swcopy(8), and swinstall(8).
GPG/PGP signing and verification of tar archives is supported as well as an installed software catalog form that allows direct use of gpg(1) for verification of the GPG signature in the package database. s
wcopy and swinstall are network transparent by direct use of SSH and support multiple SSH hops for easy access to hosts behind a firewall. Neither has to be installed on the remote target host.
Enhancements:
- swcopy - Distribution copying utility.
- Supports multiple ssh-hops to remote target or source.
- Uses ssh, sh, dd, and choice of pax, tar, star, or gtar.
- Does not have to be installed on the target host.
- target or source host may be any POSIX.2 conforming host.
- Supports remote-source to remote-target copies.
- swpackage - Packages files according to a PSF file.
- Complete implementation of Extended Definitions.
- Stand-alone operation, no use of temporary files.
- Output format is bit-for-bit identical to GNU tar.
- Supports creation of GPG embedded signature, and sha1, md5sum digests of the package payload section.
- swverify - Authenticates a signed package.
- Authenticates packages signed by swpackage.
- Verifies installed software (partially implemented).
- Authenticates the GPG signature in the installed software.
- swinstall - Install a posix package. (alpha as of 2004-02-15)
- swinstall does not have to be installed on the target host.
- The target or source host may be any POSIX.2 conforming host.
- creates an installed software catalog where the GPG signature can be verified using gpg
- Uses ssh for remote connections.
- Supports multiple ssh-hops to remote target or source.
- Uses tar (or pax) to install the files.
- Supports full error monitoring during control script execution and records exit status and installation states.
Enhancements:
- This release adds features to swpackage for using gpg-agent when signing packages.
- Also features were added to enable use of swign in an Automake rule.
- Enhancements to swverify were made to allow verification of a signed directory exported from a SCM repository such as CVS.
- The distribution package is now a self-hosting example of using the swign utility along with automake to create tar archive distributions with an embedded GPG signature.
- An unsafe use of gpgs exit status by swverify was fixed.

GOsa is a PHP-based administration tool for role based managing of accounts and systems in LDAP databases.
Standard configurations can manage generic, posix/shadow, postfix/cyrus/sieve, pureftpd, fax and samba2/3 accounts in LDAP.
GOsa has plugins for DNS (BIND), DHCP (ISC dhcpd), and system/terminal management. The look and feel can be easily adapted to users needs.
Enhancements:
- This version fixes problems with automatic reverse zones in the DNS plugin, improves IE6/7 support, updates the available translations and fixes a couple of bugs in the FAI management dialog.
- Additionally, support for changing passwords without entering a fully blown GOsa has been added.

Arg_parser is an argument parser that follows POSIX and GNU conventions for command line arguments. Arg_parser is implemented as a C++ class, and is simpler, easier to use, and safer that "getopt_long".
Arg_parser does not modify its arguments, nor uses any global variables. So you may create more than one parser in your program if you need or want to. Arg_parser can also parse options from configuration files.
To use Arg_parser in your own programs simply copy the files "arg_parser.h" and "arg_parser.cc" in your sorce tree. See also the file "main.cc" for an example of use.
Enhancements:
- The license has been updated to GPL version 3 or later.

eCryptfs is an POSIX-compliant enterprise-class stacked cryptographic filesystem for Linux. eCryptfs is derived from Erez Zadoks Cryptfs, implemented through the FiST framework for generating stacked filesystems.
eCryptfs extends Cryptfs to provide advanced key management and policy features. eCryptfs stores cryptographic metadata in the header of each file written, so that encrypted files can be copied between hosts; the file will be decryptable with the proper key, and there is no need to keep track of any additional information aside from what is already in the encrypted file itself. Think of eCryptfs as a sort of ``gnupgfs.
eCryptfs is a native Linux filesystem (other popular cryptographic filesystems for Linux require FUSE or operate via RPC calls). It can be built and distributed as a stand-alone kernel module for the Linux kernel version 2.6.15 or higher; there is no need to apply any kernel patches.
Enhancements:
- Legacy releases of eCryptfs.

Autodir is for creating directories transparently to the applications accessing them based on available information from sources like password database, group database.
Currently it supports creating home directories and group directories. Autodir can be used to create home, group directories for ldap/NIS/SQL Unix accounts.
Autodir depends on Linux autofs kernel module to transparently detect directory requests and create them on demand.
Autodir also supports calling backup programs transparently when specific directory not in use so that whole system does not need to bring offline for backup purpose.
Autodir is written using posix threads.
Enhancements:
- Code optimized in autofs events handling main section.