screen
set up on the project server. UNIX screen
is notoriously difficult to set up and outstanding useful once you do. Happily, our session this morning went smoothly. We followed the six steps in Phil Hollenback's linux.com article here and only had to insert one additional step, for a total of seven. What worked for us:1. Set the
screen
binary userid bit to true. Our starting conditions showed that the groupid bit was set to true on the screen
binary upon installation but that the userid bit (in the first triplet of permissions settings) was not. So we were required to go through this first step.2. Set the permissions on the
/var/usr/screen
directory to 755
. Hollenback doesn't list this step in his article so we had to insert it here. But it was relatively easy to figure out because screen
barked. The only unusual thing here is that /var/usr/screen
was setting to the more-liberal 775
immediately after installation. Which means that by resetting permissions to 755
we actually restricted the directory's access further. But it did work. Everything else is easy.3. First user starts a session. Example: Víctor runs
screen -S Abjad
4. First user turns multiuser mode on: Víctor runs
ctrl-A :multiuser on
5. First user adds second user: Víctor types
ctrl-A :acladd tbaca
6. Second user attaches to first user's screen session: Trevor types
screen -x vadan/Abjad
That's it. Extremely useful.
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