stg-dispatch: 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/stg-dispatch - from package: stgit-contrib

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

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