cabal-debian: 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/cabal-debian - from package: cabal-debian

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

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