launcher.xml: 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 Debian possible default full paths are:

/usr/share/doc/libcommons-launcher-java/examples/bin/launcher.xml - from package: libcommons-launcher-java
/usr/share/doc/libcommons-launcher-java/examples/example/src/bin/launcher.xml - from package: libcommons-launcher-java

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

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