Difference between windows & linux

Diff Windows & Linux

	LINUX	WINDOWS
Cost	Linux can be freely distributed, downloaded freely, distributed through magazines, Books etc. There are priced versions for Linux also, but they are normally cheaper than Windows.	$119 - $199.99, $69 for students, $99 to upgrade to pro
Development and Distribution	Linux is developed by Open Source development i.e. through sharing and collaboration of code and features through forums etc and it is distributed by various vendors.	Developed and distributed by Microsoft.
Manufacturer	Linux kernel is developed by the community. Linus Torvalds oversees things.	Microsoft
Preceded by	Basic Terminal (CLI)	MS-DOS
License	GNU General Public License	Proprietary
Usage	Linux can be installed on a wide variety of computer hardware, ranging from mobile phones, tablet computers and video game consoles, to mainframes and supercomputers.	On PC's desktops, laptops, servers and some phones.
File system support	Ext2, Ext3, Ext4, Jfs, ReiserFS, Xfs, Btrfs, FAT, FAT32, NTFS	FAT, FAT32, NTFS, exFAT
Programmed in	C	Assembly, C, C++

Comments

sed

Sed Command in Linux/Unix with examples SED command in UNIX is stands for stream editor and it can perform lot’s of function on file like, searching, find and replace, insertion or deletion. Though most common use of SED command in UNIX is for substitution or for find and replace. By using SED you can edit files even without opening it, which is much quicker way to find and replace something in file, than first opening that file in VI Editor and then changing it. o SED is a powerful text stream editor. Can do insertion, deletion, search and replace(substitution). o SED command in unix supports regular expression which allows it perform complex pattern matching. Syntax: sed OPTIONS... [SCRIPT] [INPUTFILE...] Example: Consider the below text file as an input. $cat > geekfile.txt unix is great os. unix is opensource. unix is free os. learn operating system. unixlinux which one you choose. unix is easy to learn.unix ...

initramfs" file is deleted or corrupted on your RHEL or CentOS 7

Initrd/Initramfs image provides the capability to load a RAM disk by the boot loader. This RAM disk can then be mounted as the root filesystem and programs can be run from it. Afterwards, a new root file system can be mounted from a different device. The previous root filesystem which was mounted from initrd/initramfs is then moved to a directory and can be subsequently unmounted. Their are chances that either you might have accidentally deleted "initramfs" file from the /boot partition or it is corrupted due to some reason. Then boot process will get interrupted and you will see below error: error: file '/initramfs-3.10.0-957.el7.x86_64.img' not found. Good news is you can still recover this "initramfs" by following below steps: Step 1 : Mount RHEL or CentOS 7 ISO image on your physical server and boot from it. In case you are using HPE Prolient server you can mount this ISO image on iLO, if this is virtual environment then mount it accordingly and reboot...

nw commands

troubleshoot commands in Linux. 1. ifconfig ifconfig (interface configurator) command is use to initialize an interface, assign IP Address to interface and enable or disable interface on demand. With this command you can view IP Address and Hardware / MAC address assign to interface and also MTU (Maximum transmission unit) size. # ifconfig eth0 Link encap:EthernetHWaddr 00:0C:29:28:FD:4C inet addr:192.168.50.2 Bcast:192.168.50.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe28:fd4c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:6093 errors:0 dropped:0 overruns:0 frame:0 ...

Redhat Linux 6 & 7

Search This Blog