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Linux - Ubuntu: Karmic Koala

In a world without walls and fences, who needs windows and gates?


Title and summary Date/time
1
Running Oracle's SQL Plus in Linux Ubuntu
This is a howto to use Oracle's SQL Plus application to access Oracle database without installing the Oracle software suite.
Aug 4, 2010
9:22:35 AM
2
Remotely accessing iPhone from Linux via VNC
Access iPhone from desktop using Veency (iPhone app) and VNC Viewer (Linux app). Now when accessing the iPhone, a popup always appears asking for confirmation to connect. This can be eliminated by setting up a password.
Aug 3, 2010
11:37:05 AM
3
Basic Configurations in the Apache Master Configuration File
First set of configuration to make Apache a basic Web server. These includes decision about what the server needs to do and configure it to behave the way you want it to. These includes decisions about the name, network connections it will respond to, ...
Jun 17, 2010
1:50:00 PM
4
Apache Error - No protocol handler was valid for the URL
After enabling mod_proxy and adding an entry in httpd.conf (or any configuration) related to ProxyPass directives, an error might occur about missing modules.
Jun 16, 2010
8:38:00 AM
5
Apache server version installed on a machine
This is a howto to find out the version installed on a Linux or Windows machine.
Jun 15, 2010
2:48:00 PM
6
Apache - Could not reliably determine the server's fully qualified domain name using 127.0.1.1 for ServerName
This is a howto to fix the error during apache startup that complains about the server's fully qualified domain name. This is mainly because after a fresh installation, httpd.conf is blank.
Jun 1, 2010
7:58:00 AM
7
Changing ownership of folders and files in Unix Systems
This is a howto to change folder and file owernship.
May 25, 2010
1:38:00 PM
8
How to solve could not instantiate driver for classname oracle.jdbc.driver.OracleDriver
Sometimes, on some environments - in Eclipse in this case, launching the web application stops complaining that the driver class cannot be found. The driver is in the library folder but for some reason ignored.
Mar 10, 2010
11:36:48 AM
9
Sharing a disk drive of an Ubuntu Host to a guest Windows on VMPlayer using Samba
This is a howto to install and configure Samba to share files between Linux and Windows running on VMPlayer.
Feb 12, 2010
12:00:00 PM
10
Sample command line parameters for rdesktop
A sample command line to connect to a remote Windows desktop from a Linux machine.
Feb 4, 2010
9:40:00 AM
11
Convert a Movie MOV File Format into a Flash Video FLV File Format using ffmpeg in Linux Environment
This tutorial shows how to install the application that can be used to convert a video in movie mov file format into a flash video flv file format. It uses ffmpeg to the conversion process.
Jan 26, 2010
11:46:00 AM
12
Count pattern matches in a file in Unix
This is a snippet on how to count the number of string pattern matches in a file.
Jan 7, 2010
3:33:00 PM
13
Automatically mount a disk drive at startup in Linux
This howto offers two alternative - one GUI and one command line. Basically the GUI is a tool to automatically modify or generate the same file that the command line will do.
Dec 30, 2009
2:13:00 PM
14
Get gateway number, router IP in Linux or UNIX
 $ route -n  
Dec 30, 2009
2:10:00 PM
15
Reduce bitrate of mp3 songs in Linux
This is a howto collected from forums and articles how to reduce the quality of mp3 songs so that it can be stored on devices with low memory capacity or perhaps because the device that will play the music does not require such high bitrates.
Dec 27, 2009
4:58:00 PM
16
DNS Resolution issue after connecting through a VPN with vpnc
Symptoms: After connecting to the VPN, external sites (such as google) are still accessible but internal sites not. This is also applicable if after executing vpnc, the error resolvconf: Error: /etc/resolv.conf must be a symlinkappears.
Dec 22, 2009
10:10:00 AM
17
HTML Validator extension for Firefox on Ubuntu Karmic Koala
  • If it is not enabled after browser restart or if it is enabled but not working, install the package package libstdc++5.
  • Note that this package cannot be found in the package tree in Synaptics.
  • Restart firefox after package installation.
Dec 16, 2009
3:11:00 PM
18
Microsoft TTF Fonts for Linux
After installing the package: ttf-mscorefonts-in...
Dec 16, 2009
3:06:00 PM
19
Passwordless login for unix systems
  1. From the machine where passwordlesss login should be enabled, find or create a key.
     $ ssh-keygen -t dsa 
  2. It can usually be found in the home directory. $ ls -l ~/.ssh/ -rw------- 1 geronimo geronimo 668 2009-11-24 13:25 ...
Dec 16, 2009
11:04:00 AM
20
Deleting .svn folders in a tree of folder
find . -name '.svn' -type d | xargs rm -rf
Dec 11, 2009
3:21:00 PM
21
Deleting a whole directory in linux
On the directory where the directory that needs to be deleted is stored:
$ rm -rf folder_name
Dec 11, 2009
3:08:00 PM
22
less is more
My simple and useful set of less commands that I always use.
Dec 8, 2009
11:51:00 AM
23
Device not managed status in wired networks
    On Ubunty 9.10 (Karmic Koala), if clicking the Network Manager applet displays device not managed, here is the instruction to enable it:
  1. Edit /etc/NetworkManage...
Dec 7, 2009
7:39:00 PM
24
Counting files in a directory
To determine how many files there are in the current directory: ls -1 | wc -l To count only files and not include symbolic links ls -l | grep -v ^l | wc -l Things to note: wc is to do a count of the number of lines (-l) in the output of ls ...
Dec 7, 2009
2:14:00 PM
25
Using vpnc to connect to a Cisco VPN network
    vpnc is a VPN client compatible with cisco3000 VPN Concentrator which runs in userspace and uses the tun kernel module.
  1. If vpnc is not yet installed in the linux environment, do so by:
    $ sudo apt-get install vpnc
    This will take care ...
Dec 4, 2009
2:00:00 PM
26
Restore network manager plugin in ubuntu taskbar
There are minimum two ways to solve this. First is: Check if the notification area in the top panel is displayed. If it is not, then right-click on the panel Add to Panel Select notification area Notification area should show the ...
Dec 4, 2009
11:39:00 AM
27
How to remove keyring message box in Ubuntu
open terminal To install libpam-keyring enter: sudo apt-get install libpam-keyring And to modify the gdm login file do: sudo gedit /etc/pam.d/gdm Then it will open the file in a text editor. add the line @include ...
Dec 2, 2009
11:50:00 AM
28
Enabling SSL on Tomcat
  • Import or create a certificate via
    keytool -genkey -alias tomcat -keyalg RSA
    The .keystore will automatically generated in the user's home directory
  • Enable the SSL connector configuration in server.xml
  • If Tomcat is started from ...
Dec 2, 2009
9:59:00 AM
29
Modifying screen resolution in Ubuntu
    By default Ubuntu 9.10 supports 1024×768 resolution, which is not enough most of the time. To achieve the desired resolution, run through a few commands.
  • Use xrandr to find current mode used & output name. xrandr Screen 0: minimum 320 ...
Dec 1, 2009
5:10:00 PM