Tumblr is making significant additions to its content filtering features. The platform has added a brand new ‘Safe Mode’ for browsing content on its site. The new tool allows you to keep unwanted content away from the Tumblr Dashboard as well. Tumblr is a microblogging and social networking website founded by David Karp in 2007, …
Tumblr now allows you to block explicit content with “Safe Mode” Read More »
An asteroid collision with the Earth can happen in just a matter of time, according to an astrophysicist from Ireleand. Astrophysicist Alan Fitzsimmons, from the Queen’s University in Belfast, Ireland, issued the warning ahead of Asteroid Day on June 30, which was set to remember the 1908 Tunguska event in Siberia, when an explosion believed …
How to monitor the loaded kernel modules A Linux system administrator may be required to watching the loaded kernel modules. The command that help to achieve this is “lsmod”. Example :
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 |
$ /sbin/lsmod Module Size Used by ctr 16384 1 ccm 20480 1 ipt_MASQUERADE 16384 3 nf_nat_masquerade_ipv4 16384 1 ipt_MASQUERADE iptable_nat 16384 1 nf_nat_ipv4 16384 1 iptable_nat nf_nat 24576 2 nf_nat_ipv4,nf_nat_masquerade_ipv4 nf_conntrack_ipv4 16384 2 nf_defrag_ipv4 16384 1 nf_conntrack_ipv4 xt_conntrack 16384 1 nf_conntrack 106496 5 nf_nat,nf_nat_ipv4,xt_conntrack,nf_nat_masquerade_ipv4,nf_conntrack_ipv4 ipt_REJECT 16384 2 nf_reject_ipv4 16384 1 ipt_REJECT xt_CHECKSUM 16384 1 iptable_mangle 16384 1 xt_tcpudp 16384 6 bridge 110592 0 stp 16384 1 bridge llc 16384 2 stp,bridge ip6table_filter 16384 0 ip6_tables 28672 1 ip6table_filter iptable_filter 16384 1 |
Another way to list all currently loaded kernel modules is to use “cat /proc/modules”. Example :
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 |
$ cat /proc/modules ctr 16384 1 - Live 0x0000000000000000 ccm 20480 1 - Live 0x0000000000000000 ipt_MASQUERADE 16384 3 - Live 0x0000000000000000 nf_nat_masquerade_ipv4 16384 1 ipt_MASQUERADE, Live 0x0000000000000000 iptable_nat 16384 1 - Live 0x0000000000000000 nf_nat_ipv4 16384 1 iptable_nat, Live 0x0000000000000000 nf_nat 24576 2 nf_nat_masquerade_ipv4,nf_nat_ipv4, Live 0x0000000000000000 nf_conntrack_ipv4 16384 2 - Live 0x0000000000000000 nf_defrag_ipv4 16384 1 nf_conntrack_ipv4, Live 0x0000000000000000 xt_conntrack 16384 1 - Live 0x0000000000000000 nf_conntrack 106496 5 nf_nat_masquerade_ipv4,nf_nat_ipv4,nf_nat,nf_conntrack_ipv4,xt_conntrack, Live 0x0000000000000000 ipt_REJECT 16384 2 - Live 0x0000000000000000 nf_reject_ipv4 16384 1 ipt_REJECT, Live 0x0000000000000000 xt_CHECKSUM 16384 1 - Live 0x0000000000000000 iptable_mangle 16384 1 - Live 0x0000000000000000 xt_tcpudp 16384 6 - Live 0x0000000000000000 bridge 110592 0 - Live 0x0000000000000000 stp 16384 1 bridge, Live 0x0000000000000000 llc 16384 2 bridge,stp, Live 0x0000000000000000 ip6table_filter 16384 0 - Live 0x0000000000000000 ip6_tables 28672 1 ip6table_filter, Live 0x0000000000000000 iptable_filter 16384 1 - Live 0x0000000000000000 ip_tables 28672 3 iptable_nat,iptable_mangle,iptable_filter, Live 0x0000000000000000 |
Getting information about files The “ls …
Apple will be releasing a new 12.9-inch iPad Pro device soon in addition to the recently released 10.5-inch model. Both models have been improved from the older versions of iPad Pro in few key areas, such as the bigger display, powerful processor, better cameras, support for the Apple pencil and keyboard interface. This makes it …
Windows Powershell is a great tool for writing Windows based administration scripts. It is getting popular day-by-day due to its object oriented capabilities. Also the administrators find it very handy for writing scripts in a Windows platform much similar to the Unix based shell scripting. How to Install PowerShell ISE and Enable PowerShell Scripts PowerShell 2.0 …
Oracle will be partnering with CoreOS and using Kubernetes in order to manage its cloud containers. Bob Quillin, VP of the Oracle Container Group, announced at CoreOS Fest in San Fransisco that Oracle would support Kubernetes for both its customers and in-house. As for containers, Oracle has already committed to Docker. Timothy J Fontaine, the Oracle …
Oracle to use Kubernetes for managing cloud containers Read More »
Microsoft’s new surface laptop, which is soon to be released, will be a compact rival to the core Apple MacBook. Priced at $999, the Microsoft Surface laptop is targeted at students. This is the first device to launch with Windows 10 S as the operating system. Following are some of the noticeable points : 1) It …
Scientists have for the first time discovered two-dimensional magnets that are formed by a single layer of atoms and may pave the way for more compact and efficient devices. Magnetic materials form the basis of technologies that play increasingly pivotal roles in our lives today, including sensing and hard-disk data storage. For smaller and faster …
Discovery of 2D Magnets Could Open Up a World of Potential Applications Read More »
Initially, Docker was used as a Linux containerization tool. Support for other environments such as Windows and MacOS was added later. In this post, let us take a look at how to install Docker in the Linux platform and how to create the Docker images. Installation of Docker at Linux (Ubuntu or similar) machine Installation …
In this post, we are continuing with the commands that are used for Linux system administration. How to change the hostname 1) [For RedHat and Centos] Using a text editor open the file /etc/sysconfig/network and Modify the HOSTNAME= value to match your server’s new name
|
1 |
# sudo gedit /etc/sysconfig/network |
Sample entry after editing:
|
1 2 3 4 |
$ cat /etc/sysconfig/network NETWORKING=yes NETWORKING_IPV6=no HOSTNAME=ibmppc1.example.com |
2) Run the below …
