xjobs: 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/xjobs - from package: xjobs

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