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In a term (let's say a PuTTY session), I want to see my current shell bash replacing by a fresh new one, while refreshing the user's groups (among others).

I know that exec bash --login replace current shell by a new one, reloading .bashrc or .profile files, but it does not reloading /etc/groups. I suppose this command doesn't load all system configuration file (more details on that will be appreciated).

I know that su - username do, but it creates another nested shell, not replacing the current one (and it ask for password). I don't want to type any password, nor have to exit one more.

Is there a way to natively achieve this? => Replacing my current shell with a new one, in the exact same way as I log in in another term (s fresh session with reloading bash file, groups, and so.

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    This question should be on superuser website. Sorry for the incovenience. – 4wk_ Mar 27 '17 at 12:43
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I guess you are looking for the newgrp command. You don't need to start a new shell, just:

newgrp GROUP

Of course you need to have added to that group by the system administrator before.

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  • I still want to get another new fresh shell, in order to load the conf file too. I suppose I could do exec bash --login then newgrp GROUP but what if there is others envirnnement's file not used with the exec bash? I really want the same behaviour as I log in another time. – 4wk_ Mar 27 '17 at 9:27
  • You may try exec sudo login -f YOUR_USER. Does that work for you? – hek2mgl Mar 27 '17 at 9:47
  • Hm. It asks my password for sudo. But it did replace the current shell, and reloading everything. That's close :/ EDIT : I'm not sure the exec is usefull, I have the same behaviour without. – 4wk_ Mar 27 '17 at 12:39
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    When you don't use exec you can type exit and will return back to the previous shell. That's why you use exec – hek2mgl Mar 27 '17 at 12:49

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