Linux gnome add menu and desktop entry for applications

Users can create shortcuts for an application to appear in menus, desktop,  etc. by creating a .desktop file. This desktop file contains a listings of configuration for the application. In order for your desktop environment to "see" this file, this .desktop file will have to be placed either in /usr/share/applications - for system wide applications - or in ~/.local/share/applications - if the application should be available for a single user

Once the file is placed in this location the desktop uses this file to:

• put the application in the Main Menu. 
• list the application in the Run Application... dialog
• create appropriate launchers in the menu or on the desktop.
• associate the name and description of the application.
• use the appropriate icon.
• recognize the MIME types it supports for opening files.

Here's an example of a desktop file I have created for tinyCA application. I am running Debian Jessie and this application does not come with a any menu entries or desktop shortcut.

$ cat ~/.local/share/applications/tinyca2.desktop

[Desktop Entry]
Version=1.0
Type=Application
Name=TinyCA Certificate Authority
NoDisplay=false
Categories=Network;
Icon=security-low
Exec=/usr/bin/tinyca2
Terminal=false
Comment=TinyCA2 certificate authority

The entries one by one:

[Desktop Entry] - identifies the group name to which the desktop entry belongs. A group is name is enclosed in [ ] and there can be more than one group in a desktop file. [Desktop Entry] group is required by the basic desktop file entry

Version - version of the desktop entry specification. This field is not required

Connect Evolution email client to Exchange office365 server

Evolution is a personal information management application that provides integrated mail, calendaring and address book functionality.

To connect to office365 exchange you will need the evolution program and the evolution-ews plugin.

Installation:

% sudo apt-get install evolution evolution-ews

Account setup:

1. Obtain the information about your domain's office365 servers.

To find the exchange web services URL based on the verified answer on this office365 post:
-Logon to your e-mail account using Outlook Web App (OWA).

-Click Options > See All Options > Account > My Account > Settings for POP, IMAP, and SMTP access.

-In the list of entries, locate the server name. And the URL of exchange web service for your mailbox is the URL: "https://" + "Server name" + "/EWS/Exchange.amsx".

So, in my case the Exchange Web Services URL is https://outlook.office365.com/EWS/Exchange.asmx

2. In the evolution wizard enter the details.