dump_kernel_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/dump_kernel_config - from package: vboot-utils

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

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