rushlast: 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/rushlast - from package: rush

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

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