jed: 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/jed - from package: jed

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