pkgdata: 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/pkgdata - from package: icu

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

On Debian possible default full paths are:

/usr/bin/pkgdata - from package: icu-devtools

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

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