2nash: 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/2nash - from package: lrslib

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

Error in other languages:
2nash: bevel nie gevind nie
2nash: comandă negăsită
2nash: comando não encontrado
2nash: commande introuvable
2nash: command not found
2nash: käsku ei ole
2nash: không tìm thấy lệnh
2nash: komanda nerasta
2nash: Kommando nicht gefunden.
2nash: kommandot finns inte
2nash: komut yok
2nash: nie znaleziono polecenia
2nash: níor aimsíodh an t-ordú
2nash: no se encontró la orden
2nash: no s'ha trobat l'ordre
2nash: opdracht niet gevonden
2nash: parancs nem található
2nash: perintah tidak ditemukan
2nash: príkaz nenájdený
2nash: příkaz nenalezen
2nash: команда не найдена
2nash: командата не е открита
2nash: 命令找不到
2nash: コマンドが見つかりません