xargs Command powerful tool that can revolutionize the way you handle various tasks on your system. Whether it’s processing files, executing commands in parallel, or manipulating data streams, xargs is a versatile Swiss Army knife for any Linux enthusiast.
What does the xargs command in Linux?
xargs is a great command that reads streams of data from standard input, then generates and executes command lines.
In this blog, we will explore the ins and outs of the xargs command, its practical applications, and how it can make your life as a Linux user much easier.
Syntax
xargs [options] [command]
Here are some common options used with the xargs command:
-n: Specifies the maximum number of items to be passed as arguments to the command.
-I: Allows you to specify a placeholder (usually {}) for the argument, which is replaced by each item from the input.
-t: Prints the command being executed before running it.
-p: Asks for confirmation before executing each command.
-r: Prevents the command from running if there is no input.
-a: Specifies the input file from which xargs should read the items instead of STDIN.
-P: Sets the maximum number of parallel processes to run at once.
xargs command Tips and Tricks
How to create multiple files with xargs command in Linux.
Check the most recent four logins for each currently logged-in user.
who | awk '{print $1}' | xargs -I x last -4 x
The output terminal is below
Conclusion
You have to use xargs command for your work daily. The xargs command is an indispensable tool that empowers Linux users to streamline their tasks and increase productivity.
The xargs command is a versatile tool that can greatly enhance your command-line productivity. Whether you’re processing files, running commands in parallel, or performing batch operations, xargs can simplify and automate many tasks. However, it’s important to use it with care, especially when dealing with commands that modify or delete files.
Its ability to handle large sets of data, parallelize operations, and simplify complex tasks makes it a valuable asset in any Linux user’s toolkit. I hope will this your helpful. Thank you for reading the DevopsRoles page!
You need to create a “virtual environment” to host your local copy of Ansible.
virtualenv ansible2.9
This command creates a directory called ansible2.9 in your current working directory.
You must activate it
source ansible2.9/bin/activate
You should see the prompt change to include the virtualenv name.
(ansible2.9) $
The output terminal is as below
Let’s install Ansible
pip3 install ansible==2.9
The output terminal is as below
Conclusion
Congratulations! You’ve successfully installed Ansible using Virtualenv. This setup allows you to manage Ansible and its dependencies separately, ensuring a clean and controlled environment for your automation tasks. Activate the virtual environment whenever you need to work with Ansible and deactivate it when you’re done to keep your system Python environment tidy. I hope will this your helpful. Thank you for reading the DevopsRoles page!
In this tutorial, I will install Odoo version 13/14 on Docker Container. Odoo is a suite of well-known open-source business software that covers all your company needs: CRM, eCommerce, inventory, point of sale, project … Next, we will install Odoo on Docker Container
Install Odoo on Docker Container
OS Host: Centos 7
Docker image: odoo:14 and Postgres
Install Odoo Docker Image
To install Odoo use the command below:
#For odoo version 14
docker pull odoo:14
# For Oddo 13
docker pull odoo:13
Install PostgreSQL Database Docker Image
Use the command below:
docker pull postgres
The output terminal is as follows:
Create Database Container
docker run -d -v odoo-db:/var/lib/postgresql/data -e POSTGRES_USER=odoo -e POSTGRES_PASSWORD=odoo -e POSTGRES_DB=postgres --name db postgres
Note:
odoo-db:/var/lib/postgresql/data – store the database data. This means after remove the container, odoo data will remain.
POSTGRES_USER=odoo– A User created for database
POSTGRES_PASSWORD=odoo – Password for the created database user
In this tutorial, How to check the dependencies of the package in Ubuntu.
How to Check Package Dependencies in Ubuntu
The default package manager in Ubuntu and Debian-based distros is APT. There are several ways to get the list of Dependencies of a Package in Ubuntu
APT Package Manager
The basic syntax of the command
sudo apt depends package_name
For example, How to check dependencies for the Nginx package
sudo apt depends nginx
The output terminal is as below
Alternatively, You can use apt-cache command
To list the dependencies of a package in Ubuntu, you can use the apt-cache command. The apt-cache command provides information about packages available in the repositories.
Please note that you may need administrative privileges (e.g., using sudo) to execute apt-cache commands.
Here’s how you can list the dependencies of a package:
sudo apt-cache depends nginx
The output terminal is as below
To get additional information on a specific package
sudo apt show nginx
sudo apt-cache show nginx
Using dpkg
If you have downloaded a DEB package on your system and want to know which dependencies will be installed along with the package
Terraform aws get started. In this tutorial, we’ll guide you through the basics of using Terraform to set up and manage your AWS resources efficiently. Terraform, a powerful Infrastructure as Code (IaC) tool, allows you to define your cloud infrastructure in configuration files, making it easier to automate and maintain.
Whether you’re new to Terraform or looking to enhance your AWS deployment strategies, this guide will provide you with essential steps and best practices to get you up and running quickly. Let’s dive into the world of Terraform on AWS and simplify your cloud infrastructure management.
Step-by-Step Guide: Terraform aws get started
Create a new AWS free tier.
Setup MFA for the root user.
Create new Admin user and configure MFA.
Install and configure AWS CLI on Mac/Linux and Windows
aws configure --profile devopsroles-demo
AWS Access Key ID [None]: XXXXZHBNJLCKKCE7EQQQ
AWS Secret Access Key [None]: fdfdfdfd43434dYlQ1il1xKNCnqwUvNHFSv41111
Default region name [None]:
Default output format [None]:
Install Terraform
Link download here: Download Terraform – Terraform by HashiCorp
After install Terraform.
C:\Users\HuuPV>terraform --version
Terraform v1.0.6
on windows_amd64
Your version of Terraform is out of date! The latest version
is 1.0.7. You can update by downloading from https://www.terraform.io/downloads.html
Conclusion
You have installed and configured Terraform AWS labs. I hope will this your helpful. Thank you for reading the DevopsRoles page! Terraform aws get started.
