stag-selectall_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/bin/stag-selectall_xml - from package: libdbix-dbstag-perl

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

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