onetime: 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:

/usr/bin/onetime - from package: onetime

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

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