asscale: 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 CentOS possible default full paths are:

/usr/bin/asscale - from package: libAfterImage-devel

You may install the required package with command yum install {package}

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