atspack: 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/lib/ats-anairiats-0.2.11/bin/atspack - from package: ats-lang-anairiats

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