optcomp-o: 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/optcomp-o - from package: optcomp

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

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