Linux

In the command line type the following command and hit enter:
{codecitation style=”brush: bash;”}free -m{/codecitation}
m = Displays the amount of RAM in Megabytes

NOTE: Tested on Ubuntu 9.04 Boot into Ubuntu Open a new Terminal Window Type in the following command: {codecitation style=”brush: bash;”}sudo gedit /boot/grub/menu.lst{/codecitation} Now gedit will open. Located the following lines: ## timeout sec # Set a timeout, in SEC seconds, before automatically booting the default entry # (normally the first entry defined). timeout        10...

NOTE: Tested in Ubuntu 9.04 In this example we want to find the process id for Skype. In the command line type in the command below {codecitation style=”brush: bash;”}pgrep -l skype{/codecitation} This will list the process id together with the process name for Skype. -l = List the name of the process {codecitation style=”brush: bash;”}4322 skype{/codecitation} To list...

When loading Flash enabled websites in Firefox I get Flash Player problems? I’m running Firefox 3.0.13 on Ubuntu 9.04 Examples: When loading Google Analytics some flash features like the Dashboard, Visitors Overview and Map Overlay just load the whole time without any results displaying. Some sites eg. www.sterkinekor.co.za does not work properly in Firefox. General Flash Problems occur...

NOTE: Tested on Ubuntu 9.04

Press the Key Combination ALT+F2 together to launch the Run Application window.
Type in “gksudo nautilus” and click on Run to execute the command.
Nautilus should now be started

Type in the following command in the CLI
history | tail -n 10

This command will list the last 10 command line commands that you used.
Example
  506  history n

  507  history | tail 

  508  history | tail -10

  509  history | tail -n 3

  510  pgrep skype

  511  pgrep phone

  512  grep -rni 'test' *.php

  513  cd /var/www/test/

  514  grep -rni 'test' *.php

  515  history | tail -n 10

Open a Terminal Session and type in the following command
eject or eject /dev/cdrom

If you need to close the CD Rom use the command below
eject -t

NOTE: Tested and tried on Ubuntu 9.04   Answer: By using the ‘stat‘ command. stat = Display file or file system status Example: Input: stat photos-20090916-0.db Output: File: `photos-20090916-0.db' Size: 3072          Blocks: 8          IO Block: 4096   regular file Device: 807h/2055d    Inode: 529743      Links: 1 Access: (0644/-rw-r--r--)  Uid: ( 1000/  user)   Gid: ( 1000/ ...

There are a number of ways to find the IP address. Examples below ifconfig – Deprecated, rather use the ‘”ip'” command Input: {codecitation style=”brush: shell;”}ifconfig{/codecitation} Output: {codecitation style=”brush: shell;”} eth0      Link encap:Ethernet  HWaddr 00:0c:6e:c5:67:89 UP BROADCAST MULTICAST  MTU:1500  Metric:1 RX packets:0 errors:0...

NOTE: Received this error on a Centos 5 environment while trying to run a PHP script that makes use of the DOMDocument class
 
In the CLI (Command Line Interface) run the following command
{codecitation class=”brush: shell;”}
yum install php-xml
{/codecitation}
This will install XML support and will solve the DOMDocument issue

We accomplish this by using the “mv” (move command) Example: File Example: {codecitation class=”brush: bash;”}mv old_file new_file{/codecitation} Directory Example: {codecitation class=”brush: bash;”}mv old_directory new_directory{/codecitation} NOTE: mv can move several files into a destination folder, or a single file. mv renaming will contain the original...

Open a new Terminal Window
Type in the following command and press enter
sudo apt-get autoremove gnome-do

This will remove gnome-do and all dependencies

Definition: autoremove is used to remove packages that were automatically
installed to satisfy dependencies for some package and that are no
more needed.

NOTE: Has been tested on Ubuntu 9.10 In Ubuntu open Synaptic Package Manager ‘System->Administration->Synaptic Package Manager‘ Now we need to install 2 apps called alien and fakeroot alien – Convert and install rpm and other packages fakeroot – Gives a fake root environment To install them simply type alien in the Quick search box and mark for installation and do...

In the command line type the following command within the desired directory {codecitation class=”brush: bash;”}du -c{/codecitation} This will give you the usage/size of all the folders within that particular directory.  du =  estimate file space usage -c = total To get the size/usage in a Human readable format eg. Megabytes/Gigabites append the -h option to the command above. Example...

This could come in handy if your Desktop machine is at a Remote Location and you need to gain access to it. NOTE: SSH = Secure Shell Open a new Terminal Window (CLI) and type in the following command to install SSH {codecitation class=”brush: bash;”}sudo apt-get install ssh{/codecitation} After installation you can test it to SSH to your localhost (use your standard username and...

NOTE: Tested on Ubuntu 9.10 Open a new Terminal Window  Download the following file  using the wget command{codecitation class=”brush: bash;”}wget {/codecitation} Save the file in your Home Directory or any other Directory Give the file executable privelages by using the following command {codecitation class=”brush: bash;”}chmod +x AdobeAIRInstaller.bin{/codecitation} Now...

NOTE: Tested with Ubuntu 9.10

Click on System->Preferences->Screensaver

Click on Power Management

Under the heading Display adjust the slider next to the label Set display brightness to: in order to adjust the brightness of the screen.

NOTE: Experienced this problem with Google Chrome 5.0.342.9 beta on Ubuntu 9.10 Answer: First make a backup of all you personal settings eg. Bookmarks Close Google Chrome (Press the key combination Ctrl+e in order to close Chrome) Open a new Terminal Window and type in the following command rm -rf ~/.config/google-chrome or rm -rf /home/YOURNAME/.config/google-chrome Start Google Chrome and...

In the Command Line Interface type in the uptime command and hit enter

uptime

Now the uptime information should display eg. The time, how long the system has been running, the amount of users logged in and the load average

22:59:30 up  1:36,  2 users,  load average: 0.13, 0.09, 0.08