How to protect a web page with htaccess with a password

1. Create a .htpasswd file:
   

   $ htpasswd -c .htpasswd <username>
   password: 
   

2. Create or add these lines to .htaccess file:
   
   • To protect a directory:
     

     AuthUserFile /full/path/to/.htpasswd
     AuthType Basic
     AuthName "Protected Folder"
     Require valid-user
     

   • To protect a file:
     

     AuthUserFile /full/path/to/.htpasswd
     AuthType Basic
     AuthName "Protected Page"
     
     <Files "protected_page.html">
       Require valid-user
     </Files>
     

Linux Yum commands

Display available updates for installed software

$ yum list updates

Apply updates

$ yum update 

List installed packages

$ yum list installed <package-name>
# e.g.
$ yum list installed httpd

OR

$ rpm -qa | grep httpd*

Check for and update a package

$ yum update <package-name>

Search a package or list all

$ yum list <package-name/regex/wildcard>
$ yum list all

# list group packages
$ yum grouplist

Install a package

$ yum install <package-name>

Remove/Uninstall a package

$ yum remove <package-name>

Install/Update group packages

$ yum groupinstall "Development Tools"
$ yum groupupdate "Development Tools"

List packages that are not official RHN

$ yum list extras

Find out which package is a file from

$ yum whatprovides <filename>