How to check if a player says somthing in chat

[Stepper321]

I want to check if a player types /kill and then runs the console command Kill.
I have no idea how to do this and need help with this.
Please help me, Thanks!

[James]

the hook PlayerSay ([URL="http://wiki.garrysmod.com/page/GM/PlayerSay"]http://wiki.garrysmod.com/page/GM/PlayerSay[/URL])