xliff2oo: 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/xliff2oo - from package: translate-toolkit

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

On Debian possible default full paths are:

/usr/bin/xliff2oo - from package: translate-toolkit

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

Error in other languages:
xliff2oo: bevel nie gevind nie
xliff2oo: comandă negăsită
xliff2oo: comando não encontrado
xliff2oo: commande introuvable
xliff2oo: command not found
xliff2oo: käsku ei ole
xliff2oo: không tìm thấy lệnh
xliff2oo: komanda nerasta
xliff2oo: Kommando nicht gefunden.
xliff2oo: kommandot finns inte
xliff2oo: komut yok
xliff2oo: nie znaleziono polecenia
xliff2oo: níor aimsíodh an t-ordú
xliff2oo: no se encontró la orden
xliff2oo: no s'ha trobat l'ordre
xliff2oo: opdracht niet gevonden
xliff2oo: parancs nem található
xliff2oo: perintah tidak ditemukan
xliff2oo: príkaz nenájdený
xliff2oo: příkaz nenalezen
xliff2oo: команда не найдена
xliff2oo: командата не е открита
xliff2oo: 命令找不到
xliff2oo: コマンドが見つかりません