Running commands on multiple machines output and while machine is off

Hi,

I would like to offer 2 features.
1 the ability to run command even if the machine is offline meaning that the command will be pending until the machine will be back online and then the command will run
2 Having output from the command line in a pop-up window or something like that when running a command on multiple computers. so when running a command like uninstalling a software or something like that i will be able to know if any machine had fail to uninstall etc

Thank you.