Open source bash libraries (Score 2, Informative)

Here's a neat trick to access the output of commands as file handles:

diff <( echo 'hello') <( echo 'world')

Now that I've got your attention ;) I'll take this opportunity to plug my open source bash libraries:

bash-script-lib, a collection of scripts that let you augment your own scripts with advanced capabilities:

1. "script-input", which lets you create "cat"-like input handling that can accept both forms "my-script filename" and "cat filename | my-script".
2. "script-targets", a framework for creating scripts that accept single or multiple "build-like" targets. You program just the targets; the framework takes care of the rest.
3. "filesystem", a collection of functions for normalizing paths, checking the existence of directories, etc.
4. "backups", a collection of functions for finding files, paths, and latest versions of files from amongst multiple tar files.
5. "display", a collection of functions for tabulating output, converting end-of-line-delimited output into arrays, etc.

bash-sys-manage, a collection of scripts that lets you manage VPS instances by installing components and backing up and restoring discrete aspects of a server. E.g.:

install.sh system.apt system.locale system.users system.nginx nginx.config packages.utils.base packages.utils.build php.package php-fm.build apc.package memcache.package

backup.sh system.users system.config mysql.database