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

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