-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
� Vim is a powerful editing tool, but there are some things it just can't do. However, Vim lets you access shell commands and utilities without leaving Vim, and that lets you perform some amazing
commandlinefu.com is the place to record those command-line gems that you return to again and again. Delete that bloated snippets file you've been using and share your personal repository with the world. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.