asn2gb: 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/asn2gb - from package: ncbi-tools-bin

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

Error in other languages:
asn2gb: bevel nie gevind nie
asn2gb: comandă negăsită
asn2gb: comando não encontrado
asn2gb: commande introuvable
asn2gb: command not found
asn2gb: käsku ei ole
asn2gb: không tìm thấy lệnh
asn2gb: komanda nerasta
asn2gb: Kommando nicht gefunden.
asn2gb: kommandot finns inte
asn2gb: komut yok
asn2gb: nie znaleziono polecenia
asn2gb: níor aimsíodh an t-ordú
asn2gb: no se encontró la orden
asn2gb: no s'ha trobat l'ordre
asn2gb: opdracht niet gevonden
asn2gb: parancs nem található
asn2gb: perintah tidak ditemukan
asn2gb: príkaz nenájdený
asn2gb: příkaz nenalezen
asn2gb: команда не найдена
asn2gb: командата не е открита
asn2gb: 命令找不到
asn2gb: コマンドが見つかりません