ossim-create-cg: 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-create-cg - from package: ossim-core

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