bput: 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/bput - from package: ax25-tools

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

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