asn2asn: 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/asn2asn - from package: ncbi-tools-bin

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

Error in other languages:
asn2asn: bevel nie gevind nie
asn2asn: comandă negăsită
asn2asn: comando não encontrado
asn2asn: commande introuvable
asn2asn: command not found
asn2asn: käsku ei ole
asn2asn: không tìm thấy lệnh
asn2asn: komanda nerasta
asn2asn: Kommando nicht gefunden.
asn2asn: kommandot finns inte
asn2asn: komut yok
asn2asn: nie znaleziono polecenia
asn2asn: níor aimsíodh an t-ordú
asn2asn: no se encontró la orden
asn2asn: no s'ha trobat l'ordre
asn2asn: opdracht niet gevonden
asn2asn: parancs nem található
asn2asn: perintah tidak ditemukan
asn2asn: príkaz nenájdený
asn2asn: příkaz nenalezen
asn2asn: команда не найдена
asn2asn: командата не е открита
asn2asn: 命令找不到
asn2asn: コマンドが見つかりません