CODEWITHSUNDEEP
linuxshellgnu-screen
Rems19
Rems19

Reputation: 41

How to use exact session name to enter a screen?

I'm using screen to run a lot of different instances of an application and I name the the sessions "app1", "app2" etc.

The problem is that if I have a screen named "app10" started after the one named "app1", when I type

screen -r app1

I get attached to the app10 screen because it's the last screen created "matching" the name app1.

Is it possible to get rid of name matching and use exact names ?

For technical reasons I don't want to change app1 to app01. It's used in directory name, automation etc.

Upvotes: 3

Views: 1006

Answers (2)

Adam
Adam

Reputation: 18807

As you rightly pointed out, screen uses the parameter value as a prefix.

A long alternative would be to type:

  screen -r $(basename /var/run/screen/S-$USER/*.app1}

(presuming that your sockets are in the /var/run/screen directory which is the default on Debian systems)

You can create an equivalent bash function in your .bashrc file

   function mscreen() {
      screen -r $(basename /var/run/screen/S-$USER/*$1)
   }

which let you type 

 mscreen app1

to recover your session app1 and not app10

Upvotes: 3

Samuel
Samuel

Reputation: 3801

You can use pid prefix for that purpose:

man screen

-r [pid.tty.host] -r sessionowner/[pid.tty.host] resumes a detached screen session. No other options (except combinations with -d/-D) may be specified, though an optional prefix of [pid.]tty.host may be needed to distinguish between multiple detached screen sessions. The second form is used to connect to another user's screen session which runs in multiuser mode. This indicates that screen should look for sessions in another user's directory. This requires setuid-root.

Upvotes: 0

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