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Automatically find and re-attach to a detached screen session

Terminal - Automatically find and re-attach to a detached screen session
screen -x `screen -ls | grep Detached | cut -c -10`
2012-03-01 14:13:09
User: peter4512
Functions: cut grep screen
Automatically find and re-attach to a detached screen session

I alias this as "tach":

alias tach='screen -x `screen -ls | grep Detached | cut -c -10`'

If you have several detached sessions it will just grab the first one. If you're running nested screens you can open new outer windows and run tach repeatedly to grab all the detached sessions into that one.


There is 1 alternative - vote for the best!

Terminal - Alternatives
screen -D -R
2012-03-01 15:28:21
User: marek158
Functions: screen
Tags: gnu screen

man screen:

"-D -R Attach here and now. In detail this means: If a session is running, then reattach. If necessary detach and logout remotely first. If it was not running create it and notify the user. This is the author?s favorite."

screen -RR
2012-03-01 15:27:44
User: jlaunay
Functions: screen
Tags: gnu screen

-RR option is used to resume the first appropriate detached screen session

Know a better way?

If you can do better, submit your command here.

What others think

If the screen is already detached, no need to use -x (use to attach to a session which is already attached elsewhere), -r will do the trick.

Comment by jlaunay 160 weeks and 5 days ago

Good point jlaunay.. I use -x as a matter of habit because it always works but in this case there's no need.

Btw, downvoters, care to add a comment why the downvote? It's considered polite on stackoverflow, seems fair enough to carry the practice on here.

This command does work and if you use lots of nested screen sessions that you're often attaching and detaching you might find it useful.

screen -r will attach to a screen session but requires you to specify if you have more than one detached. I find that tedious and would rather attach to all of them in one outer screen session, then decide what to do with them.

Comment by peter4512 124 weeks ago

OK jlaunay I just saw your command screen -RR... seems to do the same thing. I don't know how I missed that in who knows how many passes through 'man screen'.

Also, I guess since there's the alternatives mechanism that sort of negates the need to comment with a downvote...

Comment by peter4512 124 weeks ago

Your point of view

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