vim.gtk: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/vim.gtk - from package: vim-gtk

You may install the required package with command apt-get install {package}
Error in other languages:
vim.gtk: bevel nie gevind nie
vim.gtk: comandă negăsită
vim.gtk: comando não encontrado
vim.gtk: commande introuvable
vim.gtk: command not found
vim.gtk: käsku ei ole
vim.gtk: không tìm thấy lệnh
vim.gtk: komanda nerasta
vim.gtk: Kommando nicht gefunden.
vim.gtk: kommandot finns inte
vim.gtk: komut yok
vim.gtk: nie znaleziono polecenia
vim.gtk: níor aimsíodh an t-ordú
vim.gtk: no se encontró la orden
vim.gtk: no s'ha trobat l'ordre
vim.gtk: opdracht niet gevonden
vim.gtk: parancs nem található
vim.gtk: perintah tidak ditemukan
vim.gtk: príkaz nenájdený
vim.gtk: příkaz nenalezen
vim.gtk: команда не найдена
vim.gtk: командата не е открита
vim.gtk: 命令找不到
vim.gtk: コマンドが見つかりません