CentOS Howtos and Tutorials
Centos Linux tutorial for beginners and advanced users with special focus on security, firewall, web, mail, file and proxy servers in an enterprise environment (rss feed).
have a backup sync program on local server. I have an ssh password less login set up, and I can run commands on an external server in bash script doing:
ssh root@server2 "sync; sync; /sbin/shutdown -h now"
How do I run multiple commands in bash on a remote Unix or Linux server? What is the best way to SSH in and run various unix commands in a bash shell?
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do not want to use Adobe flash based speed testing site due to security concern on my desktop. How do I install Speedtest-cli on a CentOS Linux or Fedora Linux or Red Hat Enterise Linux (RHEL) for checking the Internet speed? [click to continue…]
need to compile an application with ncurses library and header files. How do I install install ncurses libs and header files on a Linux operating system? How do I write a simple hello world program using the ncurses and compile it on a Linux? [click to continue…]
ow do I installed the latest version of Google Chrome v45 on a Red Hat Enterprise Linux or CentOS Linux version 7.x and Fedora Linux v22 using the yum command line option? [click to continue…]
‘ve three old hard drives: sized 60, 60 and 120 GB. And 200 GB of video files, which I need to store on these drives. How would I store all my files on three hard drive without split a file into pieces or creating RAID array? How can I combines a several mount points (partitions) into the single one on a Linux operating systems? [click to continue…]
I‘m using LXC (Linux Containers) a virtualization system running on a Ubuntu LTS. How can I update all my Ubuntu or Debian Linux based guests containers VM from host operating system?
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very serious security problem has been found in the virtual floppy drive QEMU’s code used by many computer virtualization platforms including Xen, KVM, VirtualBox, and the native QEMU client. It is called VENOM vulnerability. How can I fix VENOM vulnerability and protect my Linux server against the attack? How do I verify that my server has been fixed against the VENOM vulnerability? [click to continue…]
installed minimal CentOS Linux 7.x on my laptop. How can I install Gnome desktop GUI on a RHEL (Red Hat) 7 or CentOS Linux 7 system using command line option? [click to continue…]
‘m a new RHEL (Red Hat Linux) and/or CentOS Linux 7 server user. How can I change the hostname in CentOS 7 using a command line option? [click to continue…]
‘m a CentOS Linux 7.x server user. How can I use yum command
to downgrade or rollback package updates on a RHEL (Red Hat)/CentOS/Scientific Linux server? [click to continue…]