dccpclo: 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/dccpclo - from package: ion

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

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