When I restart my Apache server using the command
sudo /etc/init.d/apache2 restart
I get the following error:
Restarting web server apache2
apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
... waiting apache2:
Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
Is the server using 127.0.1.1 instead of 127.0.0.1? What causes this error?
Suppose I have an alias in the bash shell. Is there a simple command to print out what command the alias will run?
I tried the following code to replace QQ with ZZ, but it doesn't do what I want:
var1=QQ
sed -i 's/$var1/ZZ/g' $file
However, this code does what I want:
sed -i 's/QQ/ZZ/g' $file
How do I use variables in sed?
I have requirement of converting PDF pages to images. There is a background image with some text in my file, and when I save it as an image only the background image gets saved.
Is there any software available for the same so that complete page can be converted to an image?
Because of bug #693758 I'd like to prevent apt-get upgrade and Update Manager from updating the "libgtk2.0-0" package.
How can this be achieved?