indi_lx200_16: 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_lx200_16 - from package: indi-bin

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

Error in other languages:
indi_lx200_16: bevel nie gevind nie
indi_lx200_16: comandă negăsită
indi_lx200_16: comando não encontrado
indi_lx200_16: commande introuvable
indi_lx200_16: command not found
indi_lx200_16: käsku ei ole
indi_lx200_16: không tìm thấy lệnh
indi_lx200_16: komanda nerasta
indi_lx200_16: Kommando nicht gefunden.
indi_lx200_16: kommandot finns inte
indi_lx200_16: komut yok
indi_lx200_16: nie znaleziono polecenia
indi_lx200_16: níor aimsíodh an t-ordú
indi_lx200_16: no se encontró la orden
indi_lx200_16: no s'ha trobat l'ordre
indi_lx200_16: opdracht niet gevonden
indi_lx200_16: parancs nem található
indi_lx200_16: perintah tidak ditemukan
indi_lx200_16: príkaz nenájdený
indi_lx200_16: příkaz nenalezen
indi_lx200_16: команда не найдена
indi_lx200_16: командата не е открита
indi_lx200_16: 命令找不到
indi_lx200_16: コマンドが見つかりません