gpscorrelate-gui: 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/gpscorrelate-gui - from package: gpscorrelate-gui

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

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