The Linux System Administrator's Guide. Advanced Bash-Scripting Guide. All commands from the last week sorted by votes. The 20 Best How-To Geek Linux Articles of 2010. We might be known for our Windows articles, but in 2010 we sure posted a lot of really in-depth articles covering Linux. Here’s the 20 best articles that we covered this year, covering everything from how to tweak your setup to how to use Linux to fix Windows. Want even more? You should make sure to check out the top 20 How-To Geek Explains topics of 2010, the 50 Windows Registry hacks that make Windows better, or the best 50 Windows articles for 2010. Recover Data Like a Forensics Expert Using an Ubuntu Live CD There are lots of utilities to recover deleted files, but what if you can’t boot up your computer, or the whole drive has been formatted? We’ll show you some tools that will dig deep and recover the most elusive deleted files, or even whole hard drive partitions.
Recover Data Like a Forensics Expert Using an Ubuntu Live CD Move Window Buttons Back to the Right in Ubuntu 10.04 / 10.10 Move Window Buttons Back to the Right in Ubuntu 10.04 / 10.10 Afraid of the dreaded “p” word? Zeroflux.org. Synopsis knockd [options] Description knockd is a port-knock server. It listens to all traffic on an ethernet (or PPP) interface, looking for special "knock" sequences of port-hits. A client makes these port-hits by sending a TCP (or UDP) packet to a port on the server. This port need not be open -- since knockd listens at the link-layer level, it sees all traffic even if it's destined for a closed port. Download Options -i, --interface <int> Specify an interface to listen on.
-d, --daemon Become a daemon. -c, --config <file> Specify an alternate location for the config file. -D, --debug Ouput debugging messages. -l, --lookup Lookup DNS names for log entries. -v, --verbose Output verbose status messages. -V, --version Display the version. -h, --help Syntax help. Configuration knockd reads all knock/event sets from a configuration file. Example #1: This example uses two knocks. Example #2: This example uses a single knock to control access to port 22 (SSH). Example #3: Configuration: Global Directives Author.