indi_ieq45_8406: command not found

Have You tried accessing the binary with the full path?

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_ieq45_8406 - from package: indi-bin

You may install the required package with command apt-get install {package}
Error in other languages:
indi_ieq45_8406: bevel nie gevind nie
indi_ieq45_8406: comandă negăsită
indi_ieq45_8406: comando não encontrado
indi_ieq45_8406: commande introuvable
indi_ieq45_8406: command not found
indi_ieq45_8406: käsku ei ole
indi_ieq45_8406: không tìm thấy lệnh
indi_ieq45_8406: komanda nerasta
indi_ieq45_8406: Kommando nicht gefunden.
indi_ieq45_8406: kommandot finns inte
indi_ieq45_8406: komut yok
indi_ieq45_8406: nie znaleziono polecenia
indi_ieq45_8406: níor aimsíodh an t-ordú
indi_ieq45_8406: no se encontró la orden
indi_ieq45_8406: no s'ha trobat l'ordre
indi_ieq45_8406: opdracht niet gevonden
indi_ieq45_8406: parancs nem található
indi_ieq45_8406: perintah tidak ditemukan
indi_ieq45_8406: príkaz nenájdený
indi_ieq45_8406: příkaz nenalezen
indi_ieq45_8406: команда не найдена
indi_ieq45_8406: командата не е открита
indi_ieq45_8406: 命令找不到
indi_ieq45_8406: コマンドが見つかりません