acsadmin: 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/acsadmin - from package: ion

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

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