On Fedora, RHEL, and its clones such as CentOS, Scientific Linux, and Oracle Linux, you can find it using the following command: rpm -qi basesystem Sample output [root@server ~]# rpm -qi basesystemName : basesystemVersion : 10.0Release : 7.el7.centosArchitecture: noarchInstall Date: Thu 29 Mar 2018 05:05:32 PM ISTGroup : System Environment/BaseSize : 0License : Public DomainSignature …
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HTTP download speed difference in windows vs Linux
HTTP download speed difference in windows 7 vs Linux I have a strange situation regarding a Windows PC which is showing limited internet transfer speeds for no apparent reason. If I am performing the same test on Linux box then I am getting good speed. Upon intense debugging, I am able to diagnose and find out the …
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How to upgrade ubuntu 16.04 to ubuntu 18.04 ?
How to upgrade ubuntu 16.04 to ubuntu 18.04 ? Check Ubuntu version before upgrading. lsb_release -a First, we have to run an update sudo apt update Then run upgrade command sudo apt upgrade After that dist-upgrade sudo apt dist-upgrade Then update core manager sudo apt install update-manager-core Then edit below file sudo vim /etc/update-manager/release-upgrades At …
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command to activate VG on LVM?
Command to activate VG on LVM? When you create a volume group, by default, it is activated. Sometimes you may need to activate it manually to make the kernel aware of volume groups. To activate, # vgchange -ay my_vg_name To De-activate, # vgchnage -an my_vg_name A command to activate the VG in a cluster? To …
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How to get mail statistics from your postfix mail logs
How to get mail statistics from your postfix mail logs Its an amazing tool and will provide you the following details Total number of: Messages received, delivered, forwarded, deferred, bounced and rejected Bytes in messages received and delivered Sending and Recipient Hosts/Domains Senders and Recipients Optional SMTPD totals for number of connections, number of hosts/domains …