Detailed explanation of Linux software management and building local source examples

Build local CD source

1. Mount the local CD under /mnt, mount /dev/cdrom /mnt

2 , Create your own source file in the /etc/yum.repos.d/ directory. The file name is customized and must end with repo,

　3. At this time, put / Back up the original files under etc/yum.repos.d/ to another directory, and then use the local CD source

Build HTTP LAN source

　1. Mount the CD source, mount /dev/cdrom /mnt

　2. Copy all rpm packages under the CD to the http release directory, for example: cp -R /mnt/Packages/* /var/www/html/centos/

3. Use createrepo to create HTTP source information, createrepo centos/ If there is no command, install yum install -y create*

4. Create HTTP source information completed After that, just test it on another client machine.

　5. On another client, back up the files under /etc/yum.repos.d/ to another place, edit the file above, and then close Open /etc/resolv.conf (DNS), test in time

and attach widgets; Install third-party sources yum install -y epel-release

## Change to el7

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