dc-tool: 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/dc-tool - from package: python-debiancontributors

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

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