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

Installing Debian wheezy from USB over serial console

I wanted to install Debian wheezy on a machine without a video card and no CDROM. I had a 1GB USB and I tried initially the easy way, as described in https://www.debian.org/releases/stable/amd64/ch04s03.html.en#usb-copy-isohybrid by just copying the cd image to my /dev/sda (USB stick) but I did not got any output on the console. I copied the iso file to another linux machine, mounted it as a loop device, made modifications in the isolinux.cfg file to redirect everything on the console, by adding the kernel parameters to look like below and then recreated the iso file but that still did not output anything on the serial console.

 isolinux.cfg

serial 0 9600
default install
prompt 0
timeout 100
label install
  kernel install.amd/vmlinuz
  append console=ttyS0,9600n8 initrd=/install.amd/initrd.gz --quiet

So I gave this up quite easy, and I took another approach. What I did next I followed the flexible way, as described in the debian documentation, but with some changes: 1/ I set up 2 partitions on the USB disk (/dev/sda in this example), both FAT16 (e code in fdisk), both 500MB and set the bootable flag on /dev/sda1 2/ pretty much followed the documentation and setup fat16 on /dev/sda1 and /dev/sda2:

mkdosfs /dev/sda1
mkdosfs /dev/sda2

3/ I installed the MBR on /dev/sda

install-mbr /dev/sda

4/ Installed the syslinux bootloader on /dev/sda1

syslinux /dev/sda1

5/ Copy the kernel and the initial ram image on /dev/sda1. This is done by mounting /dev/sda1 on let's say /mnt and the copying from the netinst cd vmlinuz and initrd.gz from the folder install.amd/ to /mnt (where I have /dev/sda1 mounted). Then I have created the syslinux.cfg file on /mnt according to the documentation and added the entries: