photopc: 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/photopc - from package: photopc

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

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