zita-j2a: 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/bin/zita-j2a - from package: zita-ajbridge

You may install the required package with command apt-get install {package}
Error in other languages:
zita-j2a: bevel nie gevind nie
zita-j2a: comandă negăsită
zita-j2a: comando não encontrado
zita-j2a: commande introuvable
zita-j2a: command not found
zita-j2a: käsku ei ole
zita-j2a: không tìm thấy lệnh
zita-j2a: komanda nerasta
zita-j2a: Kommando nicht gefunden.
zita-j2a: kommandot finns inte
zita-j2a: komut yok
zita-j2a: nie znaleziono polecenia
zita-j2a: níor aimsíodh an t-ordú
zita-j2a: no se encontró la orden
zita-j2a: no s'ha trobat l'ordre
zita-j2a: opdracht niet gevonden
zita-j2a: parancs nem található
zita-j2a: perintah tidak ditemukan
zita-j2a: príkaz nenájdený
zita-j2a: příkaz nenalezen
zita-j2a: команда не найдена
zita-j2a: командата не е открита
zita-j2a: 命令找不到
zita-j2a: コマンドが見つかりません