dch-repeat: 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/dch-repeat - from package: ubuntu-dev-tools

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

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