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5 Key Google Chrome Extensions
This article covers the key Google Chrome extensions which will definitely enhance your browsing experience and will make Google Chrome even more helpful and useful for you. Google Chrome extensions are programs that can be installed into Chrome in order to change the browser's functionality.
Adding to do lists or notes to Chrome. Password management. Making it easier to copy text from a site. Protect your privacy and making web browsing more secure.
Some extensions can be ethically dubious or even malicious, but Chrome features new restrictions on extension developers that should help mitigate that problem.
Unzip Files in Linux - How to perform it ?
This article covers how to use the unzip command on the CentOS 8 Linux system.
Also, you will learn various uses of the unzip command through which you can list ZIP archive content and extract files. You can utilize the unzip command according to your needs.
How to Create a ZIP File with the zip Command ?
To create a ZIP file, you need to tell zip the name of the archive file and which files to include in it.
You don't need to add the ".zip" extension to the archive name, but it does no harm if you do.
To create a file called source_code.zip containing all the C source code files and header files in the current directory, you would use this command:
$ zip source_code *.c *.h
How to Unzip a ZIP File With the unzip Command ?
To extract the files from a ZIP file, use the unzip command, and provide the name of the ZIP file.
Note that you do need to provide the ".zip" extension.
$ unzip source_code.zip
To Unzip on the Linux command line:
The simplest option that will extract the contents to current directory:
$ unzip backup.zip
To change the target directory for extracted material, use -d option followed by the desired directory:
$ unzip backup.zip -d ./restore-directory
To preview contents of zip file:
$ unzip -l backup.zip
If you don't want to unzip the whole file, then add the specific files to extract at the end:
$ unzip backup.zip file1 subdirectory/file2
The inverse of the above command. Unzip every file EXCEPT the ones specified after the -x modifier:
$ unzip backup.zip -x file1 subdirectory/file2
Unzipping a password protected file:
$ unzip -p mypassword backup.zip
Install and Run Python on CentOS 8 - How to do it ?
This article covers how to install python2 and python3 on CentOS 8. By default, python2 and python3 are not installed on CentOS 8. To install both, you need to install all python packages separately according to python versions. Also, you can run python2 and python3 environments on your system.
The 'alternatives --auto python' command is used to set any python version as the default.
To run Python in Linux:
A widely used way to run Python code is through an interactive session.
To start a Python interactive session, just open a command-line or terminal and then type in python, or python3 depending on your Python installation, and then hit Enter .
Python comes preinstalled on most Linux distributions, and is available as a package on all others.
However there are certain features you might want to use that are not available on your distro's package.
You can easily compile the latest version of Python from source.
Installing Python 3 on Linux:
1. To see which version of Python 3 you have installed, open a command prompt and run
$ python3 --version
2. If you are using Ubuntu 16.10 or newer, then you can easily install Python 3.6 with the following commands:
$ sudo apt-get update
$ sudo apt-get install python3.6
3. If you're using another version of Ubuntu (e.g. the latest LTS release) or you want to use a more current Python, we recommend using the deadsnakes PPA to install Python 3.8:
$ sudo apt-get install software-properties-common
$ sudo add-apt-repository ppa:deadsnakes/ppa
$ sudo apt-get update
$ sudo apt-get install python3.8
4. If you are using other Linux distribution, chances are you already have Python 3 pre-installed as well. If not, use your distribution's package manager. For example on Fedora, you would use dnf:
$ sudo dnf install python3
To see if pip is installed, open a command prompt and run:
$ command -v pip
Reboot Linux Mint 20 - How to do it ?
This article covers methods to reboot the Linux Mint. If you want to shut down your Linux Mint instead of rebooting, Learn How to Shutdown Linux Mint 20 .
Rebooting is the same as restarting, and close enough to powering off and then turning off your device. The purpose is to close and reopen the operating system. Resetting, on the other hand, means taking the device back to the state in which it left the factory. Resetting wipes all your personal data.
The systemctl command accepts, among many other options, halt (halts disk activity but does not cut power) reboot (halts disk activity and sends a reset signal to the motherboard) and poweroff (halts disk acitivity, and then cut power). These commands are mostly equivalent to starting the target file of the same name.
To reboot Linux:
1. To reboot the Linux system from a terminal session, sign in or "su"/"sudo" to the "root" account.
2. Then type " sudo reboot " to reboot the box.
3. Wait for some time and the Linux server will reboot itself.
To shut down Linux Mint:
Execute the following command:
sudo chmod u+s /sbin/shutdown
You will be prompted for your root password. After that, you're done and can type "exit" to exit out of the Terminal.
Linux Commands to Shutdown and Reboot the System:
1. Linux shutdown / reboot command. On Linux, like all tasks, the shutdown and restart operations can also be done from the command line.
2. "shutdown" command.
3. "reboot" command.
4. "halt" command.
5. "poweroff" command.
6. REISUB - R E I S U B key strokes.
Modify Date, Time, and Timezone in Debian 10 - How to do it ?
This article covers how you can easily change the date, time, and timezone in your Debian system. To change your Debian system's timezone, run the sudo timedatectl set-timezone command followed by the long name of the time zone you want to set
Based on your convenience, you can either choose the command line or the GUI method. If you are using Ubuntu OS, you can visit our post on How to Change the Date, Time, and Timezone in Ubuntu 20.04 LTS .
Using the correct timezone is essential for many systems related tasks and processes.
For example, the cron daemon uses the system's timezone for executing cron jobs, and the timestamps in the log files are based on the same system's timezone.
On Debian, the system's timezone is set during the install, but it can be easily changed at a later time.
To check the Current Timezone:
timedatectl is a command-line utility that allows you to view and change the system's time and date. It is available on all modern systemd-based Linux systems:
$ timedatectl
To modify Change Time Zone in Debian 10 / Debian 9:
1. Using /etc/localtime File. In this method, we will use /etc/localtime (link to the original time zone file) file to set the timezone for your system.
2. Using timedatectl command. In this method, we will use the timedatectl command to change the time zone in Debian.
Install Chrony on Linux Mint - Easy steps to do it ?
This article covers how to #install Chrony on Linux Mint 20. Once it will be installed on your system, its daemon will silently work in the background to synchronize your system's clock with the #NTP server.
However, if you do not want Chrony to perform this job any longer, then you can simply uninstall it as well.
Chrony is a flexible implementation of the Network Time Protocol (NTP).
It is used to synchronize the system clock from different NTP servers, reference clocks or via manual input.
Chrony comes with two programs:
1. chronyc – command line interface for chrony
2. chronyd – daemon that can be started at boot time
How to Install #Chrony in #Linux :
On some systems, chrony may be installed by default. Still if the package is missing, you can easily install it.
You can install chrony Using your default package manager tool on your respective Linux distributions using following command:
# yum -y install chrony [On CentOS/RHEL]
# apt install chrony [On Debian/Ubuntu]
# dnf -y install chrony [On Fedora 22+]
To check the status of chronyd use the following command:
# systemctl status chronyd [On SystemD]
# /etc/init.d/chronyd status [On Init]
If you want to enable chrony daemon upon boot, you can use the following command:
# systemctl enable chronyd [On SystemD]
# chkconfig --add chronyd [On Init]
How to Check Chrony Synchronization in Linux ?
To check if chrony is actually synchronized, we will use it's command line program chronyc, which has the tracking option which will provide relevant information:
# chronyc tracking
To check information about chrony’s sources, you can issue the following command:
# chronyc sources
