Linux, Windows, Security, Programming, Network Tutorials
umask command is used to set default file and folder permission in Linux operating system. File and folder permissions are important because the permission enables or deny different users, groups and others to access, read, write and execute of the given file. In this tutorial, we will learn how to use umask command to set default read, … Read more
chmod is very useful tool to manage file modes like read write execute. One of the most used option for chmod is +x which stands for execution rights. In this tutorial we will look different use cases for user or owner, group and others roles. List Current User and Group Of A File We generally need to … Read more
We have an archive which is archived by someone else and we want to change file and directory permissions. In order to change all sub files and directories permissions we need to run chmod recursively. Recursively means please apply given permissions all given files and folders and their sub files and folders. -R or –recursive Option … Read more
chmod 777 is very popular ownership command. 777 simply means give all rights to the all users. chmod 777 generally used to make operations more smoothly because it will remove all ownership related problems. We generally use chmod 777 some error message like below. You don’t have permission to access /bin/ on this server. All Files and Directories Recursively … Read more
chown command is used to change file and folders user, group, and other ownership. chown is a very useful tool but sometimes becomes very dangerous because it can harm the current owner’s policy.chown mainly changes read, write, and execute the owner according to the given user or group. chown Command Syntax Syntax of chown is like below. List User and Group … Read more
Linux is a command-based operating system. Most of the things are done in the command-line environment bash. In this tutorial, we will look at popular and useful commands used by Linux system administrators and users. You can access detailed tutorials simply clicking links below. tr tr command is used to translate or delete characters in the … Read more
We have talked about Python programming language previously. You can find them in Programming > Python section. Creating working environment for Python development and running our first python application is the first step to learning PYthon. In this tutorial we will look a Hello World python application about how can we create and run? Create Source Code … Read more
chage is a tool and command used to change user password expiry information in Linux, BSD, Unix systems. With this command we can set password change time, lock status, activity or inactivity of the user account. Syntax We will use following syntax for chage command. chage [options] LOGIN Help $ chage -h Show Password And Related … Read more
Every system admin horror is deleting files accidentally especially important and not backup ed configuration files. Here is how can we recover deleted files from Linux systems which is next situation if we skipped this step. Ask Before Deleting Files rm is defacto tool to remove files from Linux system. We can set up a mechanism … Read more
During daily Linux administration we generally work generally with file and directory permissions. In this tutorial we will look different examples about how to change and revert Linux file and directory permissions. There is different ways to set folder and sub folder permission in Linux but here we will describe most convenient way. Read Only … Read more