flickrbackup: 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/flickrbackup - from package: flickrbackup

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