svn-workbench: 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-workbench - from package: svn-workbench

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