-: **genthumbs()**
-A simple thumbnails generator. Resizes images (i. e. files that end in ".jpg",
-".jpeg", ".gif" or ".png") to 100x200. Output files are named "thumb-<original
-filename>". Creates an index.html with title "Images" showing the
-thumbnails as clickable links to the respective original file.
-//Warning:// On start genthumbs() silently removes a possibly existing "index.html"
-and all files and/or directories beginning with "thumb-" in current directory!
-
-: **getair()**
-Tries to download, unpack and run AIR (imaging software) version 1.2.8.
-
-: **getgizmo()**
-Tries to download and install Gizmo (VoIP software) for Debian.
-
-: **getskype()**
-Tries to download and install Skype (VoIP software) for Debian.
-
-: **getskypebeta()**
-Downloads and installs newer version of Skype.
-
-: **getxlite()**
-Tries to download and unpack X-lite (VoIP software) from counterpath.com into
-~/tmp.
-
-: **git-get-diff()**
-Opens a specific git commitdiff from kernel.org in default browser. Tree is
-chosen by the environment variable GITTREE which defaults to Linus Torvalds'
-kernel tree.
-
-: **git-get-commit()**
-Opens a specific git commit from kernel.org in default browser. The tree to
-fetch from is controlled by the environment variable GITTREE which defaults
-to Linus Torvalds' kernel tree.
-
-: **git-get-plaindiff()**
-Fetches specific git diff from kernel.org. The tree is controlled by the
-environment variable GITTREE which defaults to Linus Torvalds' kernel tree.
-
-: **greph()**
-Searches the zsh command history for a regular expression.
-
-: **hex()**
-Prints the hexadecimal representation of the number supplied as argument
-(base ten only).