Tag Archives: Ubuntu

How to resolve error referring to the text “ap_cache_cacheable_hdrs_out” when starting Apache HTTP Server

I came across a need to enable the following links for the Apache HTTP Server, in order to enable response caching. Go to /etc/apache2 folder and give the following commands.

 

ln -s ../mods-available/file_cache.load file_cache.load

ln -s ../mods-available/mem_cache.conf mem_cache.conf

ln -s ../mods-available/mem_cache.load mem_cache.load

 

Once the above links were created, I tried to restart the server and it threw the following error

 

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Show the List of Installed Packages on Ubuntu or Debian – How-To Geek

Show the List of Installed Packages on Ubuntu or Debian

The command we need to use is dpkg –get-selections, which will give us a list of all the currently installed packages.

$ dpkg --get-selections
adduser                                         install
alsa-base                                       install
alsa-utils                                      install
apache2                                         install
apache2-mpm-prefork                             install
apache2-utils                                   install
apache2.2-common                                install
apt                                             install
apt-utils                                       install

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