kash: 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/kash - from package: kanif

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

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