http://osl.iu.edu/~dikim/doku/ 2009-07-09T00:35:06-04:00 http://osl.iu.edu/~dikim/doku/ http://osl.iu.edu/~dikim/doku/lib/images/favicon.ico text/html 2007-03-19T11:31:21-04:00 http://osl.iu.edu/~dikim/doku/blog/linux/backing_up_a_data_to_cd-r?rev=1174318281&do=diff mkisofs -T -r -o /tmp/mycd.iso /data cdrecord -v -eject -fs=4M speed=8 dev=0,0,0 /tmp/mycd.iso Run “cdrecord -scanbus” to search for the CD burner on your machine. mkisofs -T -r /data | cdrecord -v -eject -fs=4M speed=8 dev=0,0,0 - text/html 2007-04-09T10:13:20-04:00 http://osl.iu.edu/~dikim/doku/blog/linux/getting_started_with_mysql?rev=1176128000&do=diff * Install MySQL. If necessary, install mysql-server. * Start MySQL (/etc/init.d/mysqld start) * Setup root password shell> mysql -u root mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpwd‘); mysql> SET PASSWORD FOR 'root'@'host_name‘ = PASSWORD(’newpwd‘); text/html 2008-04-29T00:06:02-04:00 http://osl.iu.edu/~dikim/doku/blog/linux/install_oscar_on_ps3?rev=1209441962&do=diff Requirements * OSCAR 5.1 * 2 x PS3 machines or more * USB key * OtherOS Installer * HDMI-DVI connector * YellowDogLinux(YDL)5.0 (PPC) DVD * USB Keyboard and USB mouse * Network Install Step 1. Install YDL5.0 on PS3 * Download the OtherOS installer specially built for OSCAR * Save it to the USB key (FAT format) and then hook it up to the PS3 * Power on PS3 on the game mode * Settings Menu -> System Settings -> A partition setting for hard disk: custom * 60GB = 10… text/html 2008-01-13T16:57:00-04:00 http://osl.iu.edu/~dikim/doku/blog/linux/restore_grub?rev=1200261420&do=diff Sometimes, you may mess up with your grub and you can not even boot up your system because of the broken grub. Here is a simple way to restore or re-setup grub. * Boot up your system with the first install CD or DVD to go to the rescue mode (e.g., linux rescue) * Let the rescue mode mount your linux partition(your root(/) partition) to /mnt/sysimage. * chroot /mnt/sysimage * grub-install /dev/hda <= if your grub is not installed/messed up, try to reinstall it * grub * root (hd0,1… text/html 2007-07-31T13:53:45-04:00 http://osl.iu.edu/~dikim/doku/blog/linux/running_the_remote_x_applications_on_apple?rev=1185904425&do=diff There are three things that you have to consider to make your remote X applications work on your Apple machine. * The server side configuration of SSH to allow “X11Forwarding=yes” on /etc/ssh/sshd_config (most linux boxes) * Turn on “X11” terminal application * Set the “DISPLAY” environment if it is not setup yet text/html 2008-06-17T13:31:42-04:00 http://osl.iu.edu/~dikim/doku/blog/linux/screen_shortcuts?rev=1213723902&do=diff Key Action Notes Ctrl+a c new window Ctrl+a n next window I bind F12 to this Ctrl+a p previous window I bind F11 to this Ctrl+a ” select window from list I have window list in the status line Ctrl+a Ctrl+a previous window viewedCtrl+a S split terminal horizontally into regions Ctrl+a c to create new window thereCtrl+a X Close the current region among the split regions Ctrl+a :resize resize region Ctrl+a :fit fit screen size to new terminal size Ctrl+a F is the same. Do after resizing xterm Ctr… text/html 2008-02-22T19:50:57-04:00 http://osl.iu.edu/~dikim/doku/blog/linux/setfacl?rev=1203727857&do=diff Before I forget, I would like to keep it here. setfacl -Rm group:SOME_GROUP_NAME:r-x /foo text/html 2008-02-06T07:28:43-04:00 http://osl.iu.edu/~dikim/doku/blog/linux/simple_scripts?rev=1202300923&do=diff I would like to share my simple scripts that I found useful while working for the Open Systems Lab(OSL) as a System Administrator lsof Sometimes my system is in trouble with the high loadaverage of the web server because of the attack of some malicious IPs. I have tried to look for a command to get the IPs which make this kind of trouble by looking into its pid. text/html 2008-06-18T10:55:04-04:00 http://osl.iu.edu/~dikim/doku/blog/linux/ssh_tunneling?rev=1213800904&do=diff This is a very useful thing to remember when I need to run a remote X application on a local machine. Especially, when I need to test a web server which is not open to the public. Before using ssh-tunneling, I had to setup ssh X-forward which is not safe at all and then run the web browser on the ssh-connected machine. :-( This causes a really heavy traffic.