katomic: 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/katomic - from package: kdegames

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

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