netromd: command not found

Have You tried accessing the binary with the full path?

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/netromd - from package: ax25-tools

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