ossim-orthoigen: 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

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/ossim-orthoigen - from package: ossim-core

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