pman: 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/pman - from package: perl-pmtools

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

On Debian possible default full paths are:

/usr/bin/pman - from package: pmtools

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

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