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Yum repository mirror for old CentOS' versions
Answer:
Most CentOS' mirrors don't host full mirror of Yum repository for all versions of CentOS. If you are using older version of CentOS, you might one-day found the yum update is broken since the mirror no longer contains the files you needed.
In this case, you can modify the file /etc/yum.repos.d/CentOS-Base.repo and change all paths point to the following:
..
baseurl=http://vault.centos.org/...
..Then do a yum update to reflect the changes.
Remove default Fedora/RHEL/CentOS default Apache welcome page
Answer:
To remove the Apache default welcome page under Fedora/RHEL/CentOS,
1. Remove the welcome page configuration
# rm -rf /etc/httpd/conf.d/welcome.conf2. Restart Apache
# /etc/init.d/httpd restart That's all.
How to upgrade an installed RPM package
Answer:
To upgrade an installed RPM package under Red Hat/Fedora/CentOS
# rpm –Uvh package.rpmInstall GD Library for PHP on Linux
Answer:
To install GD Library for PHP on Linux
1. Fedora/CentOS
# yum install php-gd
Then restart Apache
# service httpd restart
2. Debian/Ubuntu
# sudo apt-get install php5-gd
Then restart Apache
# sudo /etc/init.d/apache restart
How to install a RPM package
Answer:
To install a RPM package under Red Hat/Fedora/CentOS
# rpm –ivh package.rpm