One small step for a man - the Awesome World of Things

"That's one small step for a man, one giant leap for mankind" were the words spoken by Neil Armstrong when he stepped onto the surface of the moon. This remains the single most awesome achievement in the human race's technical endeavours!There was computer glitch during the descent of the landing module to the surface of the moon. However, despite this glitch the astronauts, Neil Armstrong and Buzz Aldrin safely landed on the surface. Even today, many computer programmes do not have the same levels of fail safe. (Ek praat met jou, Windoze se donderse Blue Screen!)
Margaret H. Hamilton, Director of Apollo Flight Computer Programming MIT Draper Laboratory, Cambridge, Massachusetts, stated: “Due to an error in the checklist manual, the rendezvous radar switch was placed in the wrong position. This caused it to send erroneous signals to the computer. The result was that the computer was being asked to perform all of its normal functions for landing while receiving an extra load of spurious data which used up 15% of its time. The computer (or rather the software in it) was smart enough to recognize that it was being asked to perform more tasks than it should be performing. It then sent out an alarm, which meant to the astronaut, I'm overloaded with more tasks than I should be doing at this time and I'm going to keep only the more important tasks; i.e., the ones needed for landing...Actually, the computer was programmed to do more than recognize error conditions. A complete set of recovery programs was incorporated into the software. The software's action, in this case, was to eliminate lower priority tasks and re-establish the more important ones... If the computer hadn't recognized this problem and taken recovery action, I doubt if Apollo 11 would have been the successful Moon landing it was.”There is no picture of Neil Armstrong on the moon. He had the camera so all the pictures are of the second man on the moon, Buzz Aldrin.
Important dates: 20th July, 1969, 20:18 UTC (Neil Armstrong steps onto the moon)

Read more about the moonshot over at LinkedIn here.

LDWin: Link Discovery for Windows

LDWin supports the following methods of link discovery: CDP - Cisco Discovery Protocol LLDP - Link Layer Discovery Protocol Download LDWin from here.

easywall - Web interface for easy use of the IPTables firewall on Linux systems written in Python3.

Firewalls are becoming increasingly important in today’s world. Hackers and automated scripts are constantly trying to invade your system and use it for Bitcoin mining, botnets or other things. To prevent these attacks, you can use a firewall on your system. IPTables is the strongest firewall in Linux because it can filter packets in the kernel before they reach the application. Using IPTables is not very easy for Linux beginners. We have created easywall - the simple IPTables web interface . The focus of the software is on easy installation and use. Access this neat software over on github: easywall

Latest: updatethreatblock.sh

#!/bin/bash # # usage updatethreatblock.sh <configuration file> # eg: updatethreatblock.sh /etc/ipset-threatblock/ipset-threatblock.conf # function exists() { command -v "$1" >/dev/null 2>&1 ; } if [[ -z "$1" ]]; then echo "Error: please specify a configuration file, e.g. $0 /etc/ipset-threatblock/ipset-threatblock.conf" exit 1 fi # shellcheck source=ipset-threatblock.conf if ! source "$1"; then echo "Error: can't load configuration file $1" exit 1 fi if ! exists curl && exists egrep && exists grep && exists ipset && exists iptables && exists sed && exists sort && exists wc ; then echo >&2 "Error: searching PATH fails to find executables among: curl egrep grep ipset iptables sed sort wc" exit 1 fi DO_OPTIMIZE_CIDR=no if exists iprange && [[ ${OPTIMIZE_CIDR:-yes} != no ]]; then DO_OPTIMIZE_CIDR=yes fi if [[ ! -d $(dirname &q

Thinking problem management!

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