On occasion /dev/null on one of my virtual servers goes bad. It becomes:
-rw-r--r-- root root
Which causes all kinds of horrible issues, The quick correction for this is to re-create the device. This should work on most environments including native, OpenVZ, Parallels (Virtuozza), etc.).
sudo rm /dev/null sudo mknod /dev/null c 1 3 sudo chmod 0666 /dev/null
If all worked correctly then /dev/null will be (as seen with
ls -la /dev/null):
crw-rw-rw- 1 root root 1, 3
I have not found out why this is happening. ... Click to read more
I often need to run multiple browser sessions simultaneously where each session is isolated from the other.
- Testing a web page design for multiple logins (Admin, registered, privileged, etc. users)
- Running a page that tends to crash FireFox (like Flash pages).
Under Linux (Ubuntu in this example) you can do this one of two ways:
1. Create a new user, open a terminal and
ssh to that account and
firefiox &. This creates a fully isolated session but is a bit tedious.
- This is the best method for 100% isolation.
2. Create multiple Firefox profiles. ... Click to read more