intltoolize: 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/intltoolize - from package: intltool

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

On Debian possible default full paths are:

/usr/bin/intltoolize - from package: intltool

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

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