Linux is mostly known with its distributions or distros but the reality is that Linux is just a kernel or core of the operating system. All user space and some of the operating space related tools are provided by distributions. We can actually call distribution as a operating system. Linux...
CentOS, Fedora and RedHat are Linux distributions of the same family. These distributions provides different ways and command in order to restart. In this tutorial we will look different ways to restart CentOS, Fedora and RedHat and their affect to the system. Restart with Shutdown Command shutdown command is the most...
Host name is used to identify the systems like hosts, clients, servers etc. Host name provides human readable easy names to remember. In a big environment host names will provides some easy of use. This tutorial is compatible with RHEL6, RHEL7, Fedora, CentOS 6 and CentOS 7 versions How Host...
CentOS and Ubuntu is two popular Linux distributions used in enterprise environments as well as personal environments. In this tutorial we will examine CentOS and Ubuntu Linux distributions from different perspectives. As a note CentOS distribution is free and open version of RedHat Enterprise Linux. So we will compare RedHat...
Cygwin is free software to provide Linux and Unix environment, tools and libraries in Windows operating systems. Cygwin is also called an emulator because it translates Linux system calls into Windows type systems calls. Cygwin generally used to run Linux tools like ssh,scp,bash, X11,gcc in Windows environment. Cygwin support following...
limits.conf configuration file is used to limit user, domain, process related metrics. Limits.conf is related with pam_limits module. Configuration File There is configuration file named limits.conf and located at /etc/security/ . The default content of this file is like below.
#<domain> <type> <item> <value>
#* soft core 0
#root hard core 100000
#* hard rss 10000
#@student hard nproc 20
#@faculty soft nproc 20
#@faculty hard nproc 50
#ftp hard nproc 0
#ftp - chroot /ftp
#@student - maxlogins 4
As we can see all configurations are commented so they are not effective....
Linux pwd command is the acronym of the print working directory . This command is very old and popular command. This command have do not have a lot of features. But the features it have is very useful for us. Pwd is supported by Linux, AIX, HP-UX, BSD, UNIX. Print Current Working...
Linux have different tools to manage disk devices and hard disks. hdparm is one of the popular tools. Hdparm can get information about hard disk, change writing intervals, acoustic management, DMA settings etc.But be cautious while changing settings about the hard disk drive. Syntax
hdparm [options] [device ...]
$ hdparm -h
Show Information About Disk...
Patch is a command that is used to apply patch files to the files like source code, configuration. Patch files holds the difference between original file and new file. In order to get the difference or patch we use diff tool. Software is consist of a bunch of source code. The...
Linux applications, tools, services uses libraries to get necceseary functionalities. Libraries provides a lot of functionality to the related applications, tools and services. One library can be used by different applications. This is called dynamic library using or loading. Shared Libraries Shared libraries reside in /lib , /lib64 and /usr/lib . Each library...