bank.png: 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/share/games/oneisenough/bin/pictures/bank.png - from package: oneisenough

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