med-tools: 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

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/med-tools - from package: med-tools

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