pmcat: 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/pmcat - from package: perl-pmtools

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

On Debian possible default full paths are:

/usr/bin/pmcat - from package: pmtools

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

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