ulistd: 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/sbin/ulistd - from package: ax25mail-utils

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

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