pinfo: 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/pinfo - from package: pinfo

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

On Debian possible default full paths are:

/usr/bin/pinfo - from package: pinfo

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

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