postfix - master.cf editation
 

I have a problem with this file.

I want to edit this file but i can't edit this. It is in the /etc/postfix directory.

I promted;

cd ..
cd ..
cd etc
cd postfix
vi master.cf

then i see the file. but it's not editable. I see the bottom of the page "read only". when i promted chmod +w master.cf it's show me "Operation not permitted"

how can i edit this file?

To edit a system configuration file like that you'll need to escalate to root privileges first. Most distributions let you do this with the `su` command (`su -` on redhat and `sudo su` on ubuntu).

Regards,

Alunduil

dear Alunduil,

did you mean "su -master.cf"?

i'm beginner in linux. i don't know this commands.

i need this proccess.

1. change chmode master.cf (make editable)
2. edit the master.cf
3. save master.cf

That's alright, I did mean simply: `su -`. After you issue that command the system will ask for your root password and then drop you into a shell with root privileges from which you can edit the file as you were outlining earlier.

Regards,

Alunduil

thank you.