svn-backup-dumps: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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-backup-dumps - from package: subversion-tools

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