asn2deb: 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/asn2deb - from package: wireshark-dev

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

Error in other languages:
asn2deb: bevel nie gevind nie
asn2deb: comandă negăsită
asn2deb: comando não encontrado
asn2deb: commande introuvable
asn2deb: command not found
asn2deb: käsku ei ole
asn2deb: không tìm thấy lệnh
asn2deb: komanda nerasta
asn2deb: Kommando nicht gefunden.
asn2deb: kommandot finns inte
asn2deb: komut yok
asn2deb: nie znaleziono polecenia
asn2deb: níor aimsíodh an t-ordú
asn2deb: no se encontró la orden
asn2deb: no s'ha trobat l'ordre
asn2deb: opdracht niet gevonden
asn2deb: parancs nem található
asn2deb: perintah tidak ditemukan
asn2deb: príkaz nenájdený
asn2deb: příkaz nenalezen
asn2deb: команда не найдена
asn2deb: командата не е открита
asn2deb: 命令找不到
asn2deb: コマンドが見つかりません