How to monitor network traffic in Linux? How to monitor application network traffic real time in Linux? How to perform speed test using command line in Linux? How to monitor network speed in graphical and ...
Read More5 system tools to monitor network traffic in Linux with examples
In this tutorial I will share multiple commands and methods you can use to check the Linux kernel version. We know that kernel is the core component in Linux and it is important that you ...
How to automate SSH login with password? How to pass password to scp command used in bash script ? How to perform SSH login with password instead of using private key? How to pass password ...
Read More4 useful methods to automate ssh login with password in Linux
How to increment variable in bash shell script? How to add 1 to a variable for every for loop? How to increment counter in bash? How to perform bash variable plus 1? In this tutorial ...
How to pass and store arguments to shell script? How to parse input arguments inside shell script? How to pass arguments to a function inside shell script in bash? How to read command line arguments ...
Read MoreBeginners guide to use script arguments in bash with examples
How to concatenate strings with underscore, newline, whitespace or any other character in bash? How to append substrings in a string in bash or shell script? How to append starings in a variable using for ...
Read MoreSimple guide to concatenate strings in bash with examples
With earlier RHEL/CentOS releases we used package-cleanup to remove old kernel packages. But with recent release of RHEL/CentOS 8, package-cleanup cannot be used to remove old kernels. Now we have installonly_limit and oldinstallonly which is ...
In this tutorial we will learn about getopts in bash or shell programming language. getopts is short abbreviation for "get the options" which you have supplied in the form of flags to the script. It ...
Read MoreBeginners guide to use getopts in bash scripts & examples
We have different configuration files which are used to setup system wide configuration. But we always have some requirement to setup user specific customization such as umask, alias, PATH variable etc. In such case we ...
Read MoreDifference .bashrc vs .bash_profile (which one to use?)
In this tutorial I will cover different attributes you can use in bash or shell scripting to check against files and directories. You can use bash conditional expressions with [[ ]] or use test with ...
Read MoreHow to properly check if file exists in Bash or Shell (with examples)