Trick of using screen via su’ed user

xktop

Today I met a problem. When I tried to use screen command in a su’ed user shell (su – user from root), I got an error message as below: Cannot open your terminal ‘/dev/pts/0’ – please check. How to resolve it? The trick is chmodding  the character file /dev/pts/0 to make it read/write by anyone you want to give screen access permission to.

[root@nothung ~]# file /dev/pts/0
/dev/pts/0: character special (136/0)
[root@nothung ~]# ll /dev/pts/0
cr--w--- 1 kxu tty 136, 0 Mar 12 15:34 /dev/pts/0
[root@nothung ~]# chmod o+rw /dev/pts/0
[root@nothung ~]# ll /dev/pts/0
crw--w-rw- 1 kxu tty 136, 0  Mar 12 15:34 /dev/pts/0

Now you can use screen command in root su’ed user shell.
[root@nothung ~]# su – kxu
[kxu@nothung ~]# screen         //OK, no error message


本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/6776/showart_494950.html