kdesvn: 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/kdesvn - from package: kdesvn

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

On Debian possible default full paths are:

/usr/bin/kdesvn - from package: kdesvn

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

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