Crontab Shut down command didn't work

Question

I'm creating an API using C# and ASP.NET Web API and I want it to return an error when a parameter is used that isn't recognised.

For example:

/api/Events

should a list of events

/api/Events?startTime={{startTime}}

should return a list of events that started at a particular time

/api/Events?someRandomInvalidParameter={{something}}

should return an error

Is there a nice config way to do this? If not, how can I get a list of parameters to check myself.

Solution

You have configured the crontab wrong do as following:

1. In terminal type:

   sudo crontab -e
   

2. Then give the entry for it like:

   30 02 * * * /sbin/shutdown -h now
   

Comments

[Admin]

ok but how to save it in Terminal? because I don't see save function over there.

[chadwicke619]

see the link here: help.ubuntu.com/community/CronHowto

[chadwicke619]

yes it will work every day. Don't need to do anything. See the link above to get more familiar with how to set crontab.

[Mat]

Thanks, Anton. Should this work even in the case where one parameter is valid and one is not? e.g. /api/alive?id=1&blablabla=1 From my limited testing, if I have at least one valid parameter it will still bind to one of my Get methods - could it be because I am using some optional parameters? string startTime = ""

[Anton Kozlovsky]

Yes it will work because Action will try to find id parameter and will ignore all others. Even localhost:1578/api/alive?qwe=2&id=1 will work.

[Mat]

How can I make it not work? I want the user to be notified if they add qwe=2 and it doesn't do anything.

[Anton Kozlovsky]

Wait a bit i will investigate this, in my opinion we should change routes

[Mat]

Hi Phong, I want to use parameters because I don't want to explicitly set the URL like that. What if I want to have more than one optional parameter? What about ordering? Also I don't know in advance what invalid parameters people might use.

[Phong Nguyen]

This parameter is match with position of value that user input in URL.localhost:8080/app/Events/19901101 localhost:8080/app/Events/19901101/something

[MarAvFe]

Ok, done. Also my situation changed since I posted, so check my edit to this answer too.

[Gertlex]

A key bit I was missing in reading this answer, (after trying my user's crontab with sudo poweroff) was that you want to use the root user's crontab, via sudo. D'oh.