The shell setting in /etc/passwd determines whether a Linux system user may log in via the shell or over SSH. If you don't want a certain user to be able to log in, set the shell to /bin/false or /sbin/nologin. For the user "otheruser" on Debian and Ubuntu Linux, here's an example: usermod -s /bin/false ... Read more
This tutorial shows you step by step how to add a user to a group on Linux with several examples using the Linux command-line. It also explains how to add users and groups on Linux. The commands should work on any Linux Distribution and have been tested on CentOS, Debian, and Ubuntu. Add a new ... Read more
There is no simple 'tolower' command on the bash, but you can convert uppercase characters to lowercase with a little shell script. The script uses the tr command internally for converting the chars. Create a shell script with the name 'tolower' that converts all text that is given as a command-line argument to lower case: ... Read more
One way to create a backup of a MySQL database on the shell is to use the mysqldump command. Mysqldump creates a dump of the database in form of sql commands, which can be easily restored using the mysql command or PHPMyAdmin. Backup a MySQL Database mysqldump -u root -p mydatabase > /tmp/backup_mydatabase.sql This command ... Read more
To turn on verbose logging (e.g. to debug FTP connection or authentication problems) in pure-ftpd FTP server on Debian and Ubuntu Linux. Enable debug log in pure-ftpd Execute the following command as root user in the shell to enable verbose logging: echo 'yes' > /etc/pure-ftpd/conf/VerboseLog and then restart pure-ftpd, for init based systems: service pure-ftpd-mysql ... Read more
Debian 10 has now fully switched to Systemd which means that the traditional commands to halt or reboot a system like 'shutdown -h now' or 'reboot' will not work anymore. First of all, run the command as root user. Prepend the sudo command to become root user if needed. Here are their systemd equivalents which ... Read more
Windows users are used to be able to create shortcuts to have fast access to their files and folders. This is is especially useful when these are buried deep in their system. This feature isn't as obvious on most Linux systems as it is on Windows. Create a shortcut on a Unix-like operating system using ... Read more
The SCP command line is commonly used to copy files over SSH, and between popular Operating systems like Linux, Mac and Windows in a secure fashion. SCP is used to copy files to/from a remote server. It also allows you to copy files from one remote server to another remote server, without passing traffic through your PC.
With Steam support for Linux, there will most likely be a whole lot more games coming out for Ubuntu and its consorts. While the database of games with Linux support still grows, many titles are already available. To install Steam on Ubuntu or Linux Mint, open a Terminal and enter the following commands: sudo apt-key ... Read more
Surely you have witnessed this feature on a Linux system before: with a simple key combination the user is able to switch between multiple instances of the same desktop to reduce the clutter that you get when you open everything on just one desktop. That way, you can have your mail client open on one ... Read more