svn-all-fast-export: 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/bin/svn-all-fast-export - from package: svn-all-fast-export

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