stag-itext2xml: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/bin/stag-itext2xml - from package: libdata-stag-perl

You may install the required package with command apt-get install {package}
Error in other languages:
stag-itext2xml: bevel nie gevind nie
stag-itext2xml: comandă negăsită
stag-itext2xml: comando não encontrado
stag-itext2xml: commande introuvable
stag-itext2xml: command not found
stag-itext2xml: käsku ei ole
stag-itext2xml: không tìm thấy lệnh
stag-itext2xml: komanda nerasta
stag-itext2xml: Kommando nicht gefunden.
stag-itext2xml: kommandot finns inte
stag-itext2xml: komut yok
stag-itext2xml: nie znaleziono polecenia
stag-itext2xml: níor aimsíodh an t-ordú
stag-itext2xml: no se encontró la orden
stag-itext2xml: no s'ha trobat l'ordre
stag-itext2xml: opdracht niet gevonden
stag-itext2xml: parancs nem található
stag-itext2xml: perintah tidak ditemukan
stag-itext2xml: príkaz nenájdený
stag-itext2xml: příkaz nenalezen
stag-itext2xml: команда не найдена
stag-itext2xml: командата не е открита
stag-itext2xml: 命令找不到
stag-itext2xml: コマンドが見つかりません