ossim-src2src: 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/ossim-src2src - from package: ossim-core

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

Error in other languages:
ossim-src2src: bevel nie gevind nie
ossim-src2src: comandă negăsită
ossim-src2src: comando não encontrado
ossim-src2src: commande introuvable
ossim-src2src: command not found
ossim-src2src: käsku ei ole
ossim-src2src: không tìm thấy lệnh
ossim-src2src: komanda nerasta
ossim-src2src: Kommando nicht gefunden.
ossim-src2src: kommandot finns inte
ossim-src2src: komut yok
ossim-src2src: nie znaleziono polecenia
ossim-src2src: níor aimsíodh an t-ordú
ossim-src2src: no se encontró la orden
ossim-src2src: no s'ha trobat l'ordre
ossim-src2src: opdracht niet gevonden
ossim-src2src: parancs nem található
ossim-src2src: perintah tidak ditemukan
ossim-src2src: príkaz nenájdený
ossim-src2src: příkaz nenalezen
ossim-src2src: команда не найдена
ossim-src2src: командата не е открита
ossim-src2src: 命令找不到
ossim-src2src: コマンドが見つかりません