I cant install or uninstall apache

[coolx]

Hello,
Firstly I am beginner at linux. I had some problems at apache server and then I tryed to uninstall with these command;
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apt-get remove --purge apache2
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Then I try lots of install and unintall commands. Now there is nothing in "/etc/apache2" directory. The command's output is below,
When I try to install command, server is not seems installed;
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root@cacti:/etc/apache2# apt-get install apache2
Reading package lists... Done
Building dependency tree
Reading state information... Done
apache2 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 169 not upgraded.
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Then Im trying to uninstall it, the output is below;
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root@cacti:/etc/apache2# apt-get -purge apache2
E: Command line option 'p' [from -purge] is not known.
root@cactitest:/etc/apache2# apt-get purge apache2
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
apache2*
0 upgraded, 0 newly installed, 1 to remove and 169 not upgraded.
After this operation, 36.9kB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... 146549 files and directories currently installed.)
Removing apache2 ...
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And I found these command from net, I think its getting Apache componenents;

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root@cactitest:/etc/apache2# dpkg --get-selections | grep apache
apache2-mpm-itk install
apache2-utils install
apache2.2-bin install
apache2.2-common install
libapache2-mod-php5filter install
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Why is this so hard to uninstall or install a progra to Linux? Isnt this should be easy like executing a command or clicking a button like in Windows? Or am I doing somethings wrong? Now there is nothing I can do and I still dont know is apache installed or uninstalled? In both ways server is not running.

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root@cactitest:/etc/apache2# service apache2 restart
.: 49: Can't open /etc/apache2/envvars
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[wojox]

It isn't to hard you just need to remove all of it:


sudo apt-get --purge remove apache2 apache2-mpm-prefork apache2-utils apache2.2-common libapache2-mod-php5

[raja.genupula]

i think after uninstalling some thing , i didnt remember actually you should have to clean it files either by apt-get autoremove or clean , i am in confusion of this .
even though you have uninstalled it , still those files will be in the system . thats why your facing this problem .

[coolx]

It isn't to hard you just need to remove all of it:


sudo apt-get --purge remove apache2 apache2-mpm-prefork apache2-utils apache2.2-common libapache2-mod-php5

Thanks for your answer wojox, but how could I guess or know these command line? I mean mpm-prefork, libapache2.2 or somethings.. Isnt just ""apt-get purge apache2" enough for uninstalling programs?

[ashickur.noor]

Use synaptic package manager, if you are totally new in Ubuntu or linux.