j2amidi_bridge: 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/j2amidi_bridge - from package: a2jmidid

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

Error in other languages:
j2amidi_bridge: bevel nie gevind nie
j2amidi_bridge: comandă negăsită
j2amidi_bridge: comando não encontrado
j2amidi_bridge: commande introuvable
j2amidi_bridge: command not found
j2amidi_bridge: käsku ei ole
j2amidi_bridge: không tìm thấy lệnh
j2amidi_bridge: komanda nerasta
j2amidi_bridge: Kommando nicht gefunden.
j2amidi_bridge: kommandot finns inte
j2amidi_bridge: komut yok
j2amidi_bridge: nie znaleziono polecenia
j2amidi_bridge: níor aimsíodh an t-ordú
j2amidi_bridge: no se encontró la orden
j2amidi_bridge: no s'ha trobat l'ordre
j2amidi_bridge: opdracht niet gevonden
j2amidi_bridge: parancs nem található
j2amidi_bridge: perintah tidak ditemukan
j2amidi_bridge: príkaz nenájdený
j2amidi_bridge: příkaz nenalezen
j2amidi_bridge: команда не найдена
j2amidi_bridge: командата не е открита
j2amidi_bridge: 命令找不到
j2amidi_bridge: コマンドが見つかりません