opensesamerun: 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/opensesamerun - from package: opensesame

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

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