zone_tool~rvim: 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/zone_tool~rvim - from package: dms-core

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