Misc documentation related to various IT topics.

Organised by operating system then language. These are all open source with no warranty - use at your own risk. Some of these are computer security tools - which may be illegal to own and/or run in your own country if they are misidentified as cracking/hacking tools. If you are unsure, please don't download them.

These Perl programs should run anywhere that has Perl, and are usually tested on Solaris, Red Hat Linux and Windows.

• Chaosreader Trace TCP/UDP sessions and fetch application data from snoop or tcpdump logs. This will fetch telnet sessions, FTP files, HTTP transfers, SMTP emails, ... example output was created by Chaosreader to link to the extracted HTTP sections, telnet sessions, and FTP files found in a snoop log. This can also create telnet replay programs that play back sessions in realtime: example. A tool for forensics or network troubleshooting. download code.
  
• Psio is a Perl tool for Solaris that runs ps and inserts a %I/O column to reflect disk I/O on a per process basis. Examples and other process I/O tools are here, such as prusage. This is a performance tuning or troubleshooting tool.
• CacheKit is a collection of perl and shell programs to report on cache activity for Solaris. The kit reports on I$, D$, E$, DNLC, inode cache, ufs buffer cache and segmap cache. This kit assists performance tuning.
• K9Toolkit A collection of perl programs for Solaris that use the Sun::Solaris::KStat library. This includes tools to print load averages for CPU, Memory, Disks and Network, to assist finding performance bottlenecks.
• Distillerror runs strace or truss on a command and gives a condensed report to identify problems. This can be used to troubleshoot programs. See the Solaris example, the Red Hat example, or a larger example.
• Net::SnoopLog is a Perl library to read snoop network packet logs, from RFC1761 snoop ver 2.
• Net::TcpDumpLog is a Perl library to read tcpdump/libpcap network packet logs.
• Algorithm::Hamming::Perl is a Perl library to implement the Hamming ECC algorithm, for single bit auto error correction.
• Search is a text search tool that prints surrounding lines (like GNU "grep" or VMS "search"). example.
• FreqCount is a simple frequency counter. Useful for processing logs (most common IP addr, port, etc..). example.
• PortPing is a version of ping that connects using ssh (or other ports), not ICMP. Good for checking firewalls. example.
• FindBill finds backup super blocks on a Solaris UFS for "fsck -o b=..." (if "newfs -N" dosen't help). example.
• CheckCable is a Solaris tool to print NIC status, duplex and speed. It can check if a cable is unplugged. example.
• lsfd is a Solaris 10 tool to list processes and their open file descriptor paths. example.
• Version is a tool that prints which version of Solaris commands first appeared in. example.
• OBPbanner prints out the OBP banner from Solaris, most useful on SPARC servers. example.
• MTUfinder tests different sized HTTP requests to a web server, highlighting MTU size problems. example.
• CodeRanker is a program that rates other programs on their estimated difficulty. example.
• Specials is a collection of special programs for system administration, these are written at a level suitable for senior admins.

These shell scripts run on most versions of Unix or Linux. Usually developed on Solaris and Red Hat Linux.

• DtkshDemos This is a collection of X11 dtksh scripts. They include xvmstat - a GUI version of vmstat; and xplot - a generic data plotter. Written for any Unix with dtksh.
• Ping Scripts is a collection of scripts that ping servers and illustrate different monitoring strategies.
• BBaseline is a small script to create a baseline of the system's performance, by logging the output of several tools. By creating logs during normal and peak activity, this can assist performance tuning. See the example output.
• Blacklight is a tool to check if files have been modified - changed permissions, size, modification timestamp and checksum. The script creates a single text database file. This is a IDS tool. example.
• BackupConfigs creates an archive of common system config files Customisable for your OS. example.
• InterfaceStat is a simple Solaris script to list ndd parameters of network interfaces. example.
• total is a simple script to sum a field (example), and field is a simple script to print a field (example).

This code should run wherever C code can be compiled properly. Developed on Solaris and Red Hat Linux with gcc.

• Nicstat prints network interface stats inculding Kbytes/sec for Solaris (uses Kstat). Example here. There is also a Perl version.
• listprusage prints process resource usage statistics such as minor faults and syscalls by PID. Solaris (uses procfs). Example here.
• Fastburden This is a performance testing tool that can generate a test flood of client web traffic towards a web server, or a web proxy server. This can replay traffic from existing Apache or Squid access logs at high speed. example.
• Fastbrute This is a vunerability testing tool that can generate a "mock" FTP brute force attack. example.

Solaris - DTrace  

• DTrace Tools such as iosnoop, opensnoop, bitesize.d, execsnoop, shellsnoop, tcpsnoop, ...
• DTraceToolkit a collection of over 100 scripts, with man pages and example files.
• DExplorer automatically run a broad range of DTrace scripts, and save the output in a tar file.
• DTraceTazTool a GUI to plot live disk activity.

Windows - Delphi   Something useful I wrote many years ago,

• Quick Text Toaster v1.0 A text editor designed to grab text from corrupted files. Works with executables, documents, etc.

MSDOS - QBASIC   I still find this old program amusing,

• QBASIC CRO v1.2 This is a digital (on/off) CRO that samples the parallel port at 1KHz. Turn an old 386 into a low frequency digital CRO. screenshot

Language Comparison

Guessing Game is written in awk C C++ csh Fortran java ksh Pascal Perl QBASIC sh and more as a language comparison. You guess a number between 1 and 100 and your score is saved to high score list. See the example output.

Cityscapes

• Sydney - Sydney, NSW, Australia
  
• Melbourne - Melbourne, VIC, Australia
  
• Newcastle - Newcastle, NSW, Australia
  
• Brisbane - Brisbane, QLD, Australia
  
• Canberra - Canberra, ACT, Australia
  
• Wellington - Wellington, New Zealand
  
• Boston - Boston, MA, USA
  
• San Francisco - San Francisco, CA, USA
  
• New York - New York, NY, USA
  
• Los Angeles - Los Angeles, CA, USA
  
• Beijing - Beijing, China
  
• Shanghai - Shanghai, China
  
• Tokyo - Tokyo, Japan
  

Landscapes

• NSW - NSW, Australia
  
• Perisher - Perisher, NSW, Australia
  
• Grand Canyon - Grand Canyon, AZ, USA
  

High Resolution

• Full Res - Full resolution photos from Cityscapes and Landscapes.
  

3D Photos

• Beijing - Beijing, China
  

• The Wall, my blog.
• Recommended Reading, A list of my favourite books/resources. Unix, Security...
• Games, Gaming related info, such as my favourite computer games.
• Forth, miscellaneous tricks in the Forth programming language.
• The dvorak keymap file for Solaris Sun or x86 keyboards. Or buy the real thing. (see why or read the comic).
• draft, draft or undecided stuff.

• Boyd Adamson, website: including Boyd's legendary .bashrc, Solaris 10 SMF info. Boyd's blog.
• James Dickens, Solaris, OpenSolaris, SysAdmin.
• Matty, Solaris, OpenSolaris, SysAdmin.
• Brad Marshall, Linux, Solaris, Perl, IT, computing, etc.

• http://www.google.com - Search Engine
• http://www.vivisimo.com - Search Engine
• http://www.theregister.com - IT News
• http://www.solarisinternals.com - Solaris Internals book website
• http://www.apcmag.com - Australian Personal Computer Magazine
• http://seclists.org - Computer security mailing lists (Bugtraq, Full-Disclosure)
• http://www.insecure.org/tools.html - Top 75 security tools
• http://cryptome.org - Computer security and intelligence
• http://taosecurity.blogspot.com - Computer security tips and reviews.
• http://www.ietf.org/rfc.html - RFCs (network protocols)
• http://www.opensolaris.org - OpenSolaris
• http://www.planetsolaris.org - Solaris blogs
• http://www.sunfreeware.com - Solaris freeware
• http://www.blastwave.org - Solaris freeware
• http://bolthole.com/solaris - Solaris hints and links
• http://shelldorado.com - Shell scripting resource
• http://www.cpan.org - CPAN, Perl libraries
• http://www.povray.org - POV-Ray, a free computer graphics tool (ray tracer)
• http://www.sage-au.org.au - The System Administrators Guild of Australia
• http://www.thangorodrim.net - Angband and Zangband, the best computer games ever written.
• http://www.confluence.org - Photos from every confluence (latitude/longitude).
• http://www.gutenberg.net - Project Gutenberg, free eBooks