dacspasswd: 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/dacspasswd - from package: dacs

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

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