To check command history with data and time on linux server set following path on the server.
root@hr-webserver# export HISTTIMEFORMAT=’%F %T ‘
after that you can check command history as follows.
root@hr-webserver#history | grep wget
24 2013-12-12 10:55:24 wget
23 2013-12-12 11:23:15 wget
Thats all. Try it.