-v
Write a string to standard output that indicates the pathname or command that will be used by the shell, in the current shell execution environment (see Shell Execution Environment), to invoke command_name, but do not invoke command_name.
example:
if [ ! `command -v iconv` ]; then echo "not exists"; fi
Edmodo is a microblogging platform and communications tool for use by teachers and students in the classroom. Edmodo provides teachers and students the ability to share notes, links, and files to foster communication inside and outside of the classroom. Teachers also have the ability to post alerts, assignments, and events to share with their students. You may upload any file of 100mb or less to Edmodo. We currently do not render the videos to flash. We strongly encourage users to use an external video sharing service such as Youtube, Vimeo, or Blip.tv and post the embed codes using our link posting feature.
fring™ uses your mobile internet connection to make peer-to-peer VoIP calls, send instant messages and talk with VoIP applications such as Skype, Google Talk , MSN Messenger and SIP at no extra cost.