clipedit: 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/clipedit - from package: perl-Clipboard

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

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