Index

Executing system commands from PHP with SUID executable.

If you want to execute system commands from something like PHP, you need a SUID executable which you can call from your PHP scripts. This is such a script. It could be extended to support parameters for the commands you want to execute, but that would be an enormous security risk, because then anybody can execute any command. If you need something as flexible as that, you need to think about adding some kind of security restrictions, like a list of allowed commands. Read More »
By halfgaar, 1 year ago, on February 02, 2011, at 16:02 | 1 comment

Configuring a Power DNS superslave server

Power DNS, as opposed to Bind, has the option to be a superslave. This means that it will initiate any zone transfer from trusted hosts, avoiding the need to configure each zone on both master and slave. Read More »
By halfgaar, 1 year ago, on January 30, 2011, at 23:01 | No comments

Remove appending slash from a path using Sed

Here's how you can remove the appending slash from a path using sed, the stream editor: Read More »
By Rowan Rodrik, 1 year ago, on January 29, 2011, at 21:01 | No comments

Roos Roos Loon installation and configuration weirdness

Because Roos Roos Loon has always been an application that stored its data files in the program files directory, special measures had to be taken to make sure the data files are backed up. I wanted them on a network drive. To that end, I always installed the entire program on a network drive. Read More »
By halfgaar, 1 year ago, on January 25, 2011, at 01:01 | No comments

Ubuntu and SiS 671 VGA chipset driver

The video on my mom's laptop, A Fujitsu Siemens Esprimo Mobile V5535, had recently gone awry. At the time, the laptop was running Ubuntu 9.04 (I think). Reconfiguring the driver didn't do much good, so I upgraded the machine to 10.04, hoping that that would fix it. It didn't. Read More »
By Rowan Rodrik, 1 year ago, on January 18, 2011, at 23:01 | No comments

How to make a wiki work: PALDAP

The first ever wiki I started was www.paldap.org. PALDAP stands for “PALDAP: A Lazy Directory Administrator's Pal”. Yes, that's a recursive acronym. Cute, ainnit? I actually registered the domain because it was the name of a crappy abandonware PHP LDAP administration tool that I wrote in PHP, but decided instead to configure it as a wiki to host some of my assorted experiences with LDAP and OpenLDAP in particular. Read More »
By Rowan Rodrik, 1 year ago, on January 14, 2011, at 01:01 | No comments

Finding junction files in Windows 7 and exclude them with DeltaCopy

Windows 7 has a sort of hard link, a junction file, which it uses to link the old location "Documents and Settings" to /Users/. Because of all this junctioning, you can't just copy files with a Cygwin program like Deltacopy, because it will hang in infinite loop and copy a whole lot of things twice. Read More »
By halfgaar, 1 year ago, on January 10, 2011, at 15:01 | No comments

Bash script template

A template bash script, for when you need something overengineerd that works. Read More »
By halfgaar, 1 year ago, on January 05, 2011, at 12:01 | No comments

Bash parameter parsing

Here is a code snippet I use for parameter parsing: dohelp() { echo "Example script" echo "" Read More »
By halfgaar, 1 year ago, on January 05, 2011, at 12:01 | No comments

Allowing apache to set Nagios cmd file

On debian, to prevent: Error: Could not stat() command file ‘/var/lib/nagios3/rw/nagios.cmd’! Read More »
By halfgaar, 1 year ago, on December 28, 2010, at 23:12 | No comments