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

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