Linux Ask! is a Q & A web site specific for Linux related questions. Questions are collected, answered and audited by experienced Linux users.
Fix the warning of: Remote Host Identification Has Changed error and solution
Answer:
You might experience this error, especially when you are connecting to a remote Linux machine which has just got re-installed.
To solve this, enter the command:
# ssh-keygen -R 192.168.2.36
Where 192.168.2.36 is the IP you are connecting.
Print the web site's content using wget
Answer:
To show the web site's content in command line, just one command with wget.
# wget -q -O- http://www.example.com
Easy enough?
Mirror a web site using wget
Answer:
wget is a standard program came with most Linux distributions. It allows you to create a mirror (backup) of a web site easily using the following command.
# wget -m -k -K -E http://www.example.com
How to change MAC address
Answer:
To change MAC address, you need to take the network interface
# sudo ifconfig eth1 down
Then change it by
# sudo ifconfig eth1 hw ether 00:01:02:03:04:05
How to validate the format of a XML file in Linux?
Answer:
You can use xmllint, which came as part of the libxml2-utils package.
To install
# sudo apt-get install libxml2-utils
To validate the format of XML document
# xmllint --noout file.xml
