indi_celestron_gps: 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/indi_celestron_gps - from package: indi-bin

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

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