jackeq: 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/jackeq - from package: jackeq

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

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