kxc: 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/kxc - from package: kxc

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

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