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Sunday, February 19, 2012

Alternate of hjsplit

Hay guys!! Those who use linux, lxsplit is the alternate of hjsplit.

lxsplit is a software which splits and joins pdfs.

Suppose you have a big pdf and you want to upload it in a website, but for the big size you can't upload it. So you can split the pdf and upload all the parts separately, and afterwords you download all the parts and use lxsplit/hjsplit to join those parts and get the whole pdf.

command to install lxsplit:
  $sudo apt-get install lxsplit

command to split a pdf: (after the filename you have to mention the size you want to be for each part)
  $lxsplit -s filename.pdf 20M

command to join a pdf:(just need to mention the first part name)
  $lxsplit -j filename.pdf.001

Enjoy Linux!! Best of Luck..

Thursday, December 22, 2011

Advantages of smaller PDUs

The advantages of smaller PDUs(Protocol Data Units), are mentioned below:

1. The communications network may not be able to send/receive such size of block data. Like, ATM network allows blocks only of 53 octets, whereas Ethernet allows blocks of 1526 octets.

2. Error detection can be done quickly if the PDU is small and can be quickly re-transmitted if necessary.

3. The buffer of the receiver will not be busy for a continuous long time.

4. In shared systems, data can be sent to shared devices without delaying much.

5. There is CLOSURE, so the network can check situations and restart/recovery operations if needed.

Monday, November 28, 2011

Keyboard Shortcuts for the GNOME Desktop

1. General Shortcut Keys

Alt F1Opens the Applications Menu.
Alt F2Displays the Run Application dialog.
Print ScreenTakes a screenshot.
Alt Print ScreenTakes a screenshot of the window that has focus.
Ctrl Alt right arrowSwitches to the workspace to the right of the current workspace.
Ctrl Alt left arrowSwitches to the workspace to the left of the current workspace.
Ctrl Alt up arrowSwitches to the workspace above the current workspace.
Ctrl Alt down arrowSwitches to the workspace below the current workspace.
Ctrl Alt dMinimizes all windows, and gives focus to the desktop.
F1Starts the online help browser, and displays appropriate online Help.

2. Window Shortcut Keys
Alt TabSwitches between windows. When you use these shortcut keys, a list of windows that you can select is displayed. Release the keys to select a window.
Alt EscSwitches between windows in reverse order. Release the keys to select a window.
F10Opens the first menu on the left side of the menubar.
Alt spacebarOpens the Window Menu.
Arrow keysMoves the focus between items in a menu.
ReturnChooses a menu item.
EscCloses an open menu.
Ctrl Alt right arrowSwitches to the workspace to the right of the current workspace.
Ctrl Alt left arrowSwitches to the workspace to the left of the current workspace.
Ctrl Alt up arrowSwitches to the workspace above the current workspace.
Ctrl Alt down arrowSwitches to the workspace below the current workspace.
Ctrl Alt dMinimizes all windows, and gives focus to the desktop.
When a window has focus, you can increase or decrease the size of the window:
Alt + F8Start the resize operation.
Arrow keysResize the window in the direction of the arrow key.
SpacebarComplete the resize operation, leaving the window at the current size.
EssCancel the resize operation, restoring the window to its original size.

3. Panel Shortcut Keys
Ctrl Alt TabSwitches the focus between the panels and the desktop. When you use these shortcut keys, a list of items that you can select is displayed. Release the keys to select an item.
Ctrl Alt EscSwitches the focus between the panels and the desktop. Release the keys to select an item.
Ctrl F10Opens the popup menu for the selected panel.
TabSwitches the focus between objects on a panel.
ReturnChooses the selected panel object or menu item.
Shift F10Opens the popup menu for the selected panel object.
Arrow keysMoves the focus between items in a menu. Moves the focus between interface items in an applet also.
EscCloses an open menu.
F10Opens the Applications menu from the Menu Bar, if the Menu Bar is in a panel.

4. Application Shortcut Keys
Shortcut KeysCommand
Ctrl NNew
Ctrl XCut
Ctrl CCopy
Ctrl VPaste
Ctrl ZUndo
Ctrl SSave
Ctrl QQuit

Wednesday, November 16, 2011

Spark of Engineering

Engineering er spark ta pacchi na.. Engineering onk interesting, but keno jani oi moja ta pacchina. Ashole amdr poralekha ta khub beshi boi bhittik hoye gese, tai khali boi pore pore ja shikhar shikhte hobe, ja bujhar bujhte hobe.. r shudhu tai na, kono realistic project a kaj kora, jeta hobe really needed,amon kichu niye kaj korte parle hoito bhalo lagto.. Kintu ai boi pore, mukhusto kore, khatai likhe, practice kore koto tuk engineer hote parbo jani na. engineer hoye gelew, ekjon engineering student hishabe j moja ta pawa dorkar chilo ta pai nai.. ki r korbo..

Saturday, October 8, 2011

Counting Sort

While i was trying to write the code of counting sort in my machine. I found that, its not that much easy, because in the algorithm, we take an array A,which is started from position 1(normally array starts from 0). So that is why its getting more interesting.