pcp-shping: 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/libexec/pcp/bin/pcp-shping - from package: pcp-system-tools

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

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