How to run sudo command over ssh to remote servers via a script in Linux/Unix ?
Today in this post, we will look how to run a command with root user, i.e. using sudo on remote server. And how to place it in a loop to...
Category: Linux/Unix
In this category, you can see all articles related to Unix or Linux operating System.
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How to identify /dev/mapper/path actual device on our linux system ?
Today in this post, we will look how to identify the lvm, or multipath device which is mapped by device mapper on our system. Device mapper automatically creates a pseudo...
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What is entropy pool in linux and how to generate and see the entropy pool data ?
I. Introduction Entropy pool is a large number (typically around 4096 bits) stored in a memory location which can be read by programs. This large number is a random number...
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What is the meaning of 0 in /proc/sys/kernel/ctrl-alt-del file in Linux ?
Do you know what is the meaning of value stored in /proc/sys/kernel/ctrl-alt-del file ? Let us have a look at it. I. Meaning of default values [root@ngelinux kernel]# cd /proc/sys/kernel...
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How to check ping status of a domain/host name in python ?
Today in this post, we will understand how to check ping status of a domain in python programming language. I. Program import os response=os.system("ping -c 2 google.com") if (response ==...
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Explanation of /etc/prelink.cache & prelink.conf file : What is prelink cache in Linux ?
I. Introduction prelink as its name suggests is a program used to link ELF shared libraries and binaries in order to speed up startup time. Synopsis prelink [OPTION...] [FILES] prelink...
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How to turn off bell sound during TAB completion in linux ?
I. Introduction Let us have a look at an interesting tip today to turn off/on the bell sound during TAB completion. We will achieve this by changing inputrc file configuration....
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How to take dump or backup of all mysql databases in Linux ?
Today we will look how to take backup/dump of all mysql databases of our linux system from command line. I. Taking Backup To take backup, we will use mysqldump command...
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Solved: lastb command not working or utmp file not updating.
Today we will look at the solution of two issues w.r.t lastb command. lastb command by default shows details of all the bad login attempts. Issue 1: last command display...