kernel-wedge: 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/kernel-wedge - from package: kernel-wedge

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

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