pomerge: 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/pomerge - from package: translate-toolkit

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

On Debian possible default full paths are:

/usr/bin/pomerge - from package: translate-toolkit

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

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