dact: 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/dact - from package: dact

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

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