xen-init-list: 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/lib/xen-common/bin/xen-init-list - from package: xen-utils-common

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

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