pl2pm: 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/pl2pm - from package: perl

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

On Debian possible default full paths are:

/usr/bin/pl2pm - from package: perl

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

Error in other languages:
pl2pm: bevel nie gevind nie
pl2pm: comandă negăsită
pl2pm: comando não encontrado
pl2pm: commande introuvable
pl2pm: command not found
pl2pm: käsku ei ole
pl2pm: không tìm thấy lệnh
pl2pm: komanda nerasta
pl2pm: Kommando nicht gefunden.
pl2pm: kommandot finns inte
pl2pm: komut yok
pl2pm: nie znaleziono polecenia
pl2pm: níor aimsíodh an t-ordú
pl2pm: no se encontró la orden
pl2pm: no s'ha trobat l'ordre
pl2pm: opdracht niet gevonden
pl2pm: parancs nem található
pl2pm: perintah tidak ditemukan
pl2pm: príkaz nenájdený
pl2pm: příkaz nenalezen
pl2pm: команда не найдена
pl2pm: командата не е открита
pl2pm: 命令找不到
pl2pm: コマンドが見つかりません