Various programs

Here you can find some simple tools that I wrote either for fun or because I wanted to learn how use some specific techniques. Or tools that simple that they don't deserve their own category ;-)

netblock.py

Simple tool to compute an IPv4 netblock covering all IP addresses given on the command line.

For example:

~$ netblock 1.2.3.4 1.2.3.255
1.2.3.0/24

~$ netblock 192.168.131.12 192.168.137.1 192.168.144.9
192.168.128.0/19

Download here: netblock.py (Colorized)

dlopen() demo

A simple program demonstrating the use of per-request loadable libraries. Similar concept can be used for allowing different skins of your application.

• See the sources or download a tarball.

getaddrinfo() and gethostbyname() demo

Two examples how to look up domain names and addresses.

• IPv6 and IPv4: getaddrinfo.c (Colorized)
• IPv4 only: gethostbyname.c (Colorized)

Below are programs that I didn't write but found them useful (although I often don't know who the author is).

Compute CPU frequency

This program computes the frequency of a CPU by reading a TSC register on x86 or amd64 CPU.

• See the source: compute_MHZ.c (Colorized)

DMI decode

Read, decode and print the BIOS' Desktop management interface table.

• Homepage
• Download latest from http://savannah.nongnu.org/download/dmidecode
• Or as a fallback take from here

[ Home page ] Michal Ludvig <michal@logix.cz> © 2003-2012