runit-init: command not found

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/runit-init - from package: runit

You may install the required package with command apt-get install {package}

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