dacsvfs: 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/dacsvfs - from package: dacs

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

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