centos linux

I‘m trying to use semanage command to configure certain elements of SELinux policy without requiring modification to or recompilation from policy sources under RHEL 6 server. But, I’m not able to find out this command and/or package name. How do I install semanage command under RedHat Enterprise Linux?

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How do I install iptables under Redhat (RHEL) or CentOS or Fedora Linux operating systems?

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When I run hdparm -tT /dev/sda command under CentOS / RHEL I get the following error on screen:

/dev/sda:
Timing buffered disk reads: 908 MB in 3.00 seconds = 302.39 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device


How do I fix this problem?

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How do I allow domain controllers to create machine trust accounts on-the-fly under RHEL CentOS Linux version 5.x?

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The yum command line tool is used to install and update software packages under RHEL / CentOS Linux server. I know how to apply updates using yum update command line, but I’d like to use cron to manually update packages where appropriate. How do I configure yum to install software patches / updates automatically with cron?

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How do I add route (router IP 192.168.1.254) to my Centos Linux systems from the command line?

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