cpatterson: 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/cpatterson - from package: clipper

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

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