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Old 05-14-2009, 11:58 AM   #1
i92guboj
Gentoo support team
 
Registered: May 2008
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Is there any shell with a server/client model?


I've been looking around for some time and I feel just curious.

Does anyone around know if there's any shell that can work this way? You launch a daemon, then use light clients to connect to it. Kind of like what you can do with rxvt-unicode (urxvtd/urxvtc), but on a shell interpreter.

This could be a memory saver when you have lots of bash sessions open.

Code:
$ ps -A | grep bash | wc -l
17
A secondary side effect would be a cleaner top/htop/ps output. So far, I've never heard of a shell that can be daemonized like this.

Thanks for reading
 
Old 05-14-2009, 11:22 PM   #2
Valery Reznic
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Quote:
Originally Posted by i92guboj View Post
I've been looking around for some time and I feel just curious.

Does anyone around know if there's any shell that can work this way? You launch a daemon, then use light clients to connect to it. Kind of like what you can do with rxvt-unicode (urxvtd/urxvtc), but on a shell interpreter.

This could be a memory saver when you have lots of bash sessions open.

Code:
$ ps -A | grep bash | wc -l
17
A secondary side effect would be a cleaner top/htop/ps output. So far, I've never heard of a shell that can be daemonized like this.

Thanks for reading
Why do you think it will save memory ?
All read-only and all not written to read-write pages are shared anyway
and all written to read-write pages are likely to have different per session data
 
Old 05-15-2009, 12:15 AM   #3
i92guboj
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Location: Lucena, Córdoba (Spain)
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It's more about curiosity than a real need. My theory is purely empirical and based on my experience with urxvt. In the case of urxvt it certainly helps to run urxvtd and 20 urxvtc's instead of 20 plain urxvt's. I haven't audited the urxvt sources to find the 'why'. I guess that sharing a single context has some advantages.

However it would be nice even if it's just to simplify a bit the output of process watchers.
 
  


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