Generating Random Passwords from the Command Line in Linux — You can use next command for generating random password in command line: # tr -dc A-Za-z0-9 < /dev/urandom | head -c 8 | xargsPassword example: 4fFUND1dAlso you can use next bash function (add it to yuor ~/.bashrc): Random Password Generator genpasswd() {
tr -dc A-Za-z0-9 < /dev/urandom | head -c ${1:-8} | xargs
} Reboot .bashrc: $ . ~/.bashrc Now use genpasswd to generate random passwords: $ genpasswd
vmuWt7TS
$ genpasswd 10
ymkIgxcdCh
$ genpasswd 16
wQnqgdc5tAQoiBdf …

Clear bash history command line in Linux

How to check your Bash History
To start working with the Linux history commands, you will need command history. When you launch it, you will be shown the entire history of commands in the terminal. # history
If you want to see the last 5 commands then use the following command # history 5

How to clear Linux command history
If you don’t …

How To Clear or Remove Linux Logins History — On Linux systems, there are three standard commands that show information about the most recently connected users: last, lastb and lastlog. The output of these commands includes: login, time of last connection , IP address, port, etc. To preserve anonymity, it is necessary to clear the history of recent connections.
Command Log Description last /var/log/wtmp Lists successful login/logout history lastb /var/log/btmp …

How to Find the Largest Files in Linux — The search for large files is especially relevant when the disk runs out of space and you have to look for files to delete. The best way to find all the largest files on a Linux server is to use the command line. You can easily get a list of the largest files using a combination of several simple commands. How …

Create New User and Grant Permissions to MySQL database server

In this article, we will explain how to create a new user in MySQL, and grant permissions to that user in MySQL. Creating a new user in MySQL database and granting permissions is an easy task if you follow this tutorial carefully. 1. Log in to MySQL To log in to MySQL system uses the following command: mysql -u root …

Enable remote access to MySQL database server If you try to connect to server mysql from remote server, you will get an error. Initially, mysql uses the standard localhost connection (127.0.0.1). It needs to be fixed this in the configuration file my.cnf (usually in Linux the file is located /etc/mysql/my.cnf) In my.cnf we need to find line: bind-address = 127.0.0.1 It needs to be changed to: bind-address = 0.0.0.0 Now …