zeoctl: 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/zeoctl - from package: python-zodb
/usr/lib/zope2.13/bin/zeoctl - from package: zope2.13

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

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