familyqueue: 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/sympa/bin/familyqueue - from package: sympa

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

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