kde-cp: 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/kde-cp - from package: kdebase-runtime

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

On Debian possible default full paths are:

/usr/bin/kde-cp - from package: kde-runtime

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

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