jenkins_invoke: 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/jenkins_invoke - from package: python-jenkinsapi

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

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