xaces3: 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

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/xaces3 - from package: aces3

You may install the required package with command apt-get install {package}
Error in other languages:
xaces3: bevel nie gevind nie
xaces3: comandă negăsită
xaces3: comando não encontrado
xaces3: commande introuvable
xaces3: command not found
xaces3: käsku ei ole
xaces3: không tìm thấy lệnh
xaces3: komanda nerasta
xaces3: Kommando nicht gefunden.
xaces3: kommandot finns inte
xaces3: komut yok
xaces3: nie znaleziono polecenia
xaces3: níor aimsíodh an t-ordú
xaces3: no se encontró la orden
xaces3: no s'ha trobat l'ordre
xaces3: opdracht niet gevonden
xaces3: parancs nem található
xaces3: perintah tidak ditemukan
xaces3: príkaz nenájdený
xaces3: příkaz nenalezen
xaces3: команда не найдена
xaces3: командата не е открита
xaces3: 命令找不到
xaces3: コマンドが見つかりません