Linux Ask! is a Q & A web site specific for Linux related questions. Questions are collected, answered and audited by experienced Linux users.
Remove packages and config files in Ubuntu
Answer:
If you want to remove a package in Ubuntu, you can use apt-get remove, e.g.
# sudo apt-get remove php5
However, the config files will NOT be removed.
To remove the config files also, you can use apt-get purge, e.g.
# sudo apt-get purge php5
Set session-wide environment variables
Answer:
Create the file .pam_environment in your home directory.
# vi ~/.pam_environment
FOO=BAR
Add you key=value pairs into this file and save it.
This is the recommended way to store user's environment variables.
Set system-wide environment variables in Ubuntu
Answer:
The recommended way now is to edit the file /etc/environment .
# vi /etc/environment
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games"
Add you key=value pairs into this file and save it.
Remove default Debian/Ubuntu default Apache welcome page
Answer:
To remove the Apache default welcome page under Debian/Ubuntu,
1. Remove the welcome page configuration
# a2dissite default2. Restart Apache
# sudo /etc/init.d/apache2 restart That's all.
How to check which mime types are supported by your Debian/Ubuntu
Answer:
The /etc/mime.types file is the system-wide rules which defined for mapping filename suffices to mime types. Your Apache on Debian based Linux will read this file and set the correct Content-type header for these files when serving to users.
# cat /etc/mime.types