kget: 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 CentOS possible default full paths are:

/usr/bin/kget - from package: kdenetwork

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/kget - from package: kget

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

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