klines: command not found

Have You tried accessing the binary with the full path?

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/klines - from package: kdegames

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