intltool-merge: 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/intltool-merge - from package: intltool

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

On Debian possible default full paths are:

/usr/bin/intltool-merge - from package: intltool

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

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