svn-do: 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/svn-do - from package: svn-buildpackage

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

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