svndumpfilter: 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 CentOS possible default full paths are:

/usr/bin/svndumpfilter - from package: subversion

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/svndumpfilter - from package: subversion

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

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