xbindkeys-config: 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 Debian possible default full paths are:

/usr/bin/xbindkeys-config - from package: xbindkeys-config

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

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