Alert for user login

[Son dam bi]

Can advise if I want to have a alert message when a specific user is login to the system , what can I do ? that mean if a specific is login to system then send me a alert message ( by any way ) to inform me the user is login , what is the method ? thanks

[Johnson Punniyalingam]

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[Johnson Punniyalingam]

>>>if I want to have a alert message when a specific user is login to the system , what can I do ?<<<

you can edit the .profile of that specfic user
add entry to send email alert ,

mailx -s "YOUR SUBJECT LINE GOES HERE" <

example :

mailx -s "Hello Rosy" email@abc.com.au < subject_text_file.dat

OR

echo "Hi Rosy how are you doing??" | mailx -s "Hello Rosy" email@abc.com.au

[Viktor Balogh]

I would only take a look at the output of the 'last' command, it displays all the login processes. Or it's about a single specific user, you could have a script running from cron periodically, and check with:

# last USERNAME