osc: 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/osc - from package: osc

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