svn-bench: 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
/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/lib/debug/usr/bin/svn-bench - from package: subversion-dbg
/usr/bin/svn-bench - from package: subversion-tools

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