minit-update: 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:

/sbin/minit-update - from package: minit

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