Ctlr ^C denied to a user

[Sirius Black]

Hi all,
I want that a user could not do ctrl ^C with his keyboard to stop a process, what I could do in the .profile file of the user or in my script ?
thanks a lot

[Victor BERRIDGE]

Add in his .profile:
trap 'echo "^G^G^G" ;' 1 2 15


All the best
Victor

[RAC_1 · Accepted solution]

As tolad by vitor putting
trap "" 1 2 3

Will ignore siganls
1-HUP
2-INT
3-QUIT

But a knowledgable user can alway modify that as trp 1 2 3

Anil

[Sirius Black]

Unfortunatelly it doesn't works, my user succeed still in doing ctrl ^C an stop my process

[Fred Ruffet]

you can also set for this user intr to another keystroke the he doesn't know :
stty intr ^=

Regards,

Fred

[Victor BERRIDGE]

Did he loo out and log in again?
Has he modified his .profile?
is he accessing by X ? which means he is not reading .profile...

Sorry for the inconvenience but these last 2 weeks I just cant get my eyes to accommodate correctly -I just changed glasses but seem to still have trouble with my screen and keyboard... I apologize!
Victor

[RAC_1]

Once you put those entries in user's .profile. Ask him to log out and log in.

As said earlier, a knowledgable user can always overide it with command trp 1 2 3

You can also start the program with nohup. man nohup. Program started started with nohup will not respond to HUP signal

Anil

[Fabio Ettore]

Ciao,

as Fred directed the right way is intr in man stty.
For example for my users in $HOME/.profile there is a line as the following:

stty erase "^H" kill "^U" intr "^C" eof "^D"

as from /usr/newconfig/.profile.

If I delete intr "^C" to see

stty erase "^H" kill "^U" eof "^D"

that user cannot use CTRL+C to interrupt processes.

HTH.

Best regards,
Fabio

[Victor BERRIDGE]

But as Anil already said beware of knoledgable user, OK you remove from his .profile intr "^C" .
What going to stop him type stty intr....

All the best
Victor

[Sirius Black]

OK with trap "" 1 2 3 I've resolved
Ciao Fabrizio