Category: Unix

  • Tunnel to locally running mysql server using ssh

    Running and administrating mysql can sometimes be a hassle especially if you’re running a semi-secure environment. This usually means that your mysql server will not accept connections from outside and only localhost connections are allowed. There is a quick way of getting around this if you’re stuck somewhere and really need to use that graphical […]

  • Twitter from Unix/Linux/OSX command line

    Yep, you can. Here is the recipe: 1) You need to install “curl” for your OS. OSX comes with it by default which is nice. Most unices out there also have it installed or have it available for download (Ubuntu, Debian users can use “sudo apt-get install curl” to install).2) Edit a text file using […]

  • Some Unix/Linux Coolness…..

    I think every admin must do something stupid atleast once….right? Well my brain fart happened during a System upgrade (another story I’ll be ranting about later). I made backups of all the files I thought were important (/home, /etc, /var/lib/mysql and other userdata we had on the system) and installed Ubuntu 8.04 on the server. […]

  • Hardy Heron is out…..

    Heha…..Ubuntu’s newest release 8.04 LTS (aka. Hardy Heron) is out and ready for your consumption. This release is major in that it’s LTS. For those of you who don’t know LTS versions of Ubuntu are supported for 3 years for the desktop version and 5 years for server version. ALL FREE….so what are you waiting […]

  • Twitter….the cool way….

    To be honest, I’ve had a twitter account for a while, but since I need a browser (or phone) to get access to it and twit, I hadn’t used it. But that’s about to change (maybe), since I found out how you can twit from command line. Yep, twit away from any UNIX, Linux, OSX […]

  • OSX Webmaster special: Shared webserver, bad umask settings, group permissions and filenames with spaces…

    Okay so this all started with our users not being able to share files on our webserver. We use SSH only for upload/download and interactive access (ie: no ftp). Through trial and error we found out that the default umask (under OSX Server) for sftp uploaded files are 0033 (ie: rwxr–r–) and directories are 0022 […]

  • screen…it’s not just for nerds anymore.

    So after hearing from people at work how great the “screen” command was (yeah welcome to gnuland boys and girls), I decided to do a short tutorial on screen. This way I can stop telling them to RTFM and instead tell them to RTFB (Blog). Anyways, What is “screen” first of all….From the pages of […]

  • QNX RTOS is now Open Source….

    Here is some fantastic news for all you embedded developers. QNX OS is now open source. For those who don’t know QNX is a commercial POSIX-compliant Unix-like real-time operating system, aimed primarily at the embedded systems market. As a microkernel-based OS, QNX is based on the idea of running most of the OS in the […]

  • Couple of cool remote ssh commands for your UNIX arsenal

    Here is a easy way to copy an entire directory tree from one Unix machine to another, while retaining the permisssions and ownership, using ssh as the middle man. Assuming that you want to copy everything under source_directory to destination_directory on another machine here is the command you would issue on the source machine (first […]