Hello, This is actually a pretty common problem; after using "su" you can't run programs which want to write directly to your terminal. You can try this yourself:
[EMAIL PROTECTED] TTY=`tty` [EMAIL PROTECTED] echo $TTY /dev/pts/6 [EMAIL PROTECTED] echo hello world > $TTY hello world [EMAIL PROTECTED] sudo su -c "echo root succeeds > $TTY" root root succeeds [EMAIL PROTECTED] sudo su -c "echo otheruser fails > $TTY" otheruser /bin/bash: /dev/pts/4: Permission denied You can "fix" this by changing the permissions on $TTY so that any user can write to it. This is not particularly secure so I am not encouraging you to do it, but the command one would use would be "chmod o+rw $TTY" Thus: [EMAIL PROTECTED] sudo su -c "echo root has permission > $TTY" otheruser /bin/bash: /dev/pts/4: Permission denied [EMAIL PROTECTED] chmod o+rw $TTY [EMAIL PROTECTED] sudo su -c "echo root has permission > $TTY" otheruser otheruser fails Good luck, -- Erik On Thu, Nov 20, 2008 at 07:59:28PM +0100, Folkert van Heusden wrote: > Hi, > > Situation: as root-user I start a quake server in screen under an > other user. Now when I become that user and do screen -r, I get an > error: > > mauer:/# /bin/su - quake -c /usr/local/games/Quake/bin/start_qw2 > > and the /usr/local/games/Quake/bin/start_qw2 script contains: > ---------------------------------------------------------------------- > #! /bin/sh > > cd /usr/local/games/Quake/bin > > /usr/bin/screen -d -m -S 'QuakeWorld' ./mvdsv > ---------------------------------------------------------------------- > > Now when I do the following: > mauer:/# su - quake > [EMAIL PROTECTED]:~$ screen -r QuakeWorld > Cannot open your terminal '/dev/pts/28' - please check. > [EMAIL PROTECTED]:~$ ls -l /dev/pts/28 > crw--w---- 1 folkert tty 136, 28 2008-11-20 19:58 /dev/pts/28 > > what can it be? > > > Folkert van Heusden > > -- > MultiTail ?r en flexibel redskap f?r att f?lja logfilar, utf?r av > commandoer, filtrera, ge f?rg, sammanfoga, o.s.v. f?lja. > http://www.vanheusden.com/multitail/ > ---------------------------------------------------------------------- > Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com > > > _______________________________________________ > screen-users mailing list > screen-users@gnu.org > http://lists.gnu.org/mailman/listinfo/screen-users _______________________________________________ screen-users mailing list screen-users@gnu.org http://lists.gnu.org/mailman/listinfo/screen-users
