ssh

All posts tagged ssh by Linux Bash

Posted on

March 2025

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Use `sshpass` non-interactively without exposing passwords

sshpass noninteractive password security automation ssh

`sshpass` facilitates non-interactive SSH logins, useful for automation but risky due to potential password exposure. Safely use it by storing passwords in environment variables or secure files, and always clean up after use. Prefer SSH keys for enhanced security but use `sshpass` securely when needed.

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Posted on

January 2025

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Mounting Remote Filesystems Over SSH with `sshfs`

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This guide explores `sshfs` for mounting remote filesystems over SSH in Linux. It covers the installation of `sshfs`, setting up a local mount point, and securely mounting and accessing remote files. Additional insights include properly unmounting filesystems, making mounts persistent, and optimizing performance using SSH keys and other `sshfs` options, with resources for further exploration. Ideal for efficient and secure remote file management.

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Posted on

January 2025

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ssh-copy-id: Automate SSH key setup

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The article entitled "Streamline Your SSH Process with ssh-copy-id" explains how to use the `ssh-copy-id` utility to simplify the setup of SSH keys across various Linux systems. It covers the installation process, benefits of using `ssh-copy-id` for automating the transfer of public SSH keys to remote servers, and provides instructional guidance for secure and efficient SSH key management.

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Posted on

January 2025

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autossh: Keep SSH connections alive automatically

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Explore the benefits and setup process of autossh, a tool that maintains stable SSH connections. Ideal for remote work and server management over unstable networks, autossh automatically restarts SSH sessions after disconnections. This guide covers installation across various Linux distributions like Ubuntu, Fedora, and openSUSE, and provides usage examples with minimal configuration. Perfect for ensuring persistent remote access, autossh enhances your SSH environment seamlessly.

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Posted on

January 2025

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SSH Key Authentication Setup Differences

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Learn how to set up SSH key authentication across different Linux distributions such as Ubuntu, Fedora, and CentOS. This guide covers generating, copying, and managing SSH keys with variations in handling SELinux contexts and firewalls across distributions. Gain practical security tips and explore distribution-specific commands to enhance system security.

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Posted on

January 2025

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sftp: Interactive file transfer over SSH

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This article provides an in-depth guide on using SFTP (Secure File Transfer Protocol) for securely transferring files over SSH. It covers installation steps across various Linux distributions like Debian, Ubuntu, Fedora, and more, along with detailed instructions on how to connect, navigate directories, and transfer files interactively. Essential for sysadmins and developers, this guide enhances secure file management skills on remote servers.

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Posted on

January 2025

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scp: Secure file copy via SSH

ssh secure copy file transfer scp protocol data encryption

The article details using Secure Copy Protocol (SCP) for secure file transfers in Linux, utilizing SSH for encryption and authentication. It covers SCP's installation across various Linux distributions, demonstrates basic to advanced usage with examples, and explores alternatives to SCP while acknowledging its simplicity and widespread adoption. Ideal for system administrators and those interested in secure data transmission.

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Posted on

January 2025

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rsync: File transfer and synchronization over SSH

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Learn to master rsync over SSH for secure and efficient data transfer and synchronization in Linux systems. This detailed guide offers insights into rsync's installation, key features like delta encoding, and secure usage practices. It serves as a foundation for system administrators and IT professionals to enhance their file management skills, complete with practical examples and tips for optimizing rsync operations in various Linux environments.

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Posted on

January 2025

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proxytunnel: Proxy HTTP(S) traffic via SSH

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Discover the capabilities of ProxyTunnel, a tool designed to tunnel HTTP and HTTPS traffic through an SSH server. Ideal for restrictive networks, it enhances security by encrypting traffic and using SSH’s robust authentication. This overview covers installation on Linux distributions using package managers like apt, dnf, and zypper, and offers configuration tips and practical usage examples.

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Posted on

January 2025

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autossh: Automatically restart SSH sessions

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Autossh enhances SSH by ensuring continuous sessions despite disruptions, using automated restarts and monitoring tools. This guide covers the key benefits, installation on various Linux systems, and configuration steps, making Autossh essential for remote tasks requiring reliable SSH connections.

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Posted on

January 2025

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sshpass: Automate SSH password entry

ssh sshpass automation password entry security

Learn to automate SSH logins with 'sshpass,' a utility for non-interactively providing a password for SSH authentication. This guide covers installation on various Linux distributions and discusses security measures for safer password handling, ideal for admins and developers needing streamlined SSH access.

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Posted on

January 2025

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Techniques for seamless SSH authentication in scripts

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This blog post on LinuxBash details various techniques for seamless SSH authentication in scripts, focusing on key-based authentication. It covers generating and deploying SSH key pairs, managing keys across systems, and using `ssh-agent` for key management. The guide aims to enhance both security and efficiency in automated, script-driven remote operations.

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Posted on

January 2025

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Using ssh and scp in scripts for remote operations

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Discover how to seamlessly integrate SSH and SCP into Bash scripts for efficient remote server management. Learn to set-up password-free SSH logins, use SCP for secure file transfers, and handle errors effectively. A valuable tool for system administrators and developers focused on improving productivity and security in remote operations.

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Posted on

January 2025

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Using `ssh` for Secure Remote Access

ssh secure remote access authentication encryption network security

This comprehensive guide on Linuxbash.sh explores the use of SSH for secure remote system management across various Linux distributions. It covers installation and configuration details, including switching to key-based authentication and changing the default SSH port to enhance security. Practical tips for setting up SSH keys for password-less login are also provided, making it a valuable resource for administrators aiming to optimize network security.

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Posted on

January 2025

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How to Securely Copy Files with `scp`

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The article "How to Securely Copy Files with `scp` on Linux Systems" teaches the use of `scp` for secure file transfers over Linux systems. It covers `scp`'s installation across various distributions, explains its syntax, and provides examples for transferring files between local and remote machines. Advanced topics like copying directories, using specific SSH keys, and bandwidth limitation are also discussed.

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Posted on

January 2025

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Secure Remote Access with `ssh`

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Secure your remote system management effectively with this Linux Bash guide on SSH setup and security enhancements. Learn how to install SSH on various systems, transition to key-based authentication, modify the default port, and implement security measures like Fail2Ban and disabling root login. Perfect for IT professionals aiming to fortify their SSH configurations against unauthorized access.

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Posted on

January 2025

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Transferring Files with `scp`

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Learn how to securely transfer files using the `scp` command with this comprehensive guide. Delve into `scp’s` utility, which leverages SSH protocols for encrypted file transfers between hosts. It covers basic syntax, key options like recursive copying and port specification, and practical examples for local and remote transfers. Ideal for system administrators and developers who want to master secure file transfer techniques.

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Posted on

December 2024

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Working with SSH in Bash: Remote Command Execution

ssh bash remote command execution linux

Learn to combine SSH with Bash scripting for effective remote command execution. This guide covers setting up SSH key authentication, automating tasks, and managing files and sessions using scp or rsync. Ideal for system administrators and developers, it provides practical examples to enhance productivity in server management and operational tasks.

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Posted on

April 2023

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The Safest Way To Connect To Linux Via Command Line

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Discover how to securely connect to Linux systems via SSH in this guide. Learn about generating and sharing SSH keys, enhancing security with VPNs, and adjusting SSH configurations to prevent unauthorized access. Ideal for both novices and experienced administrators, this article offers a comprehensive approach to maintaining optimal security for your Linux servers. Further readings suggest advanced SSH configurations and protection strategies against brute-force attacks.

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Extracting package contents without installing

package extraction content management file handling unpacking software installationfree

Discover how to explore the contents of Linux software packages without installing them. This insightful guide for developers and tech experts details methods using popular package managers like `apt`, `dnf`, and `zypper`. Learn to download and unpack `.deb` and `.rpm` packages to inspect contents, ensuring security, custom installations, or gaining educational insights with tools like `dpkg-deb`, `rpm2cpio`, and `cpio`. Ideal for those conducting security audits or exploring software packages across different Linux distributions.

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Cleaning up unused packages and dependencies

package management system cleanup dependencies uninstallation storage optimization

Learn to tidy up Linux systems by managing unnecessary packages and dependencies via popular package managers like APT, DNF, and Zypper. The guide covers critical steps such as updating lists, upgrading packages, and safely removing unneeded dependencies, enhancing system efficiency. Practical tips and additional resources for deeper understanding are also provided.

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Configuring HTTP/3 (QUIC) with Apache

http3 quic apache configuration performance

Learn how to configure HTTP/3 with Apache, leveraging the new QUIC protocol for improved web performance. This guide covers the installation of Apache and the experimental mod_http3, adjustments for QUIC protocol support, and firewall settings for UDP traffic on port 443. Despite being challenging due to limited native support, adopting HTTP/3 can significantly better your site's reliability and speed.

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Basic Navigation Commands: `cd`, `ls`, and `pwd`

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Master the basics of Linux and Unix terminal operations with this guide to `cd`, `ls`, and `pwd`. These essential commands allow users to navigate directories, list contents, and display their current directory path, enhancing efficiency. Ideal for beginners, the post provides detailed explanations and examples to aid in mastering file system navigation.

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Mounting Temporary Filesystems with `tmpfs`

tmpfs temporary filesystems mounting linux memory storage

Learn about `tmpfs`, a speedy, volatile filesystem in Linux that uses RAM and swap for temporary data storage. `tmpfs` improves performance for frequent read/write operations, enhances security by clearing data on reboot, and reduces SSD wear. Our guide outlines easy mounting steps, size configuration, and making `tmpfs` persistent with `/etc/fstab`, plus best practices for memory and data management. Ideal for scenarios requiring quick temporary storage access.

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yq: YAML processing

yaml processing yq data manipulation configuration

Discover the utility of `yq`, a command-line tool for processing YAML files, akin to `jq` for JSON. Ideal for developers and sysadmins, yq supports reading, in-place editing, and complex data manipulations directly from the terminal. The blog covers installation across Linux systems and offers a practical guide to efficiently using yq in various tasks and scripts, making it an indispensable tool for configuration management.

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Securing APT repositories using signed keys

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Discover how to enhance the security of your Linux systems by verifying APT repositories with signed GPG keys. This guide offers a deep dive into GPG keys and repository signing, with practical steps for securing APT (Debian/Ubuntu), DNF (Fedora/RHEL/CentOS), and Zypper (openSUSE/SUSE) package sources, protecting against tampered software threats. Learn key management and security practices to maintain a secure Linux environment.

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24 Linux Desktops You Should Know About

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Discover 24 Linux desktop environments in this comprehensive guide on LinuxBash.sh, perfect for both expert system administrators and newcomers. It explores popular options like GNOME, KDE Plasma, and less known ones like Enlightenment and Budgie, detailing their customization, efficiency, appearance, and system demands. Find installation tips and insights into each environment's relevance and popularity to choose the best desktop for your computing needs based on specific user requirements and hardware capabilities.

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Setting up SSL/TLS with Certbot and Nginx

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Learn to secure your website on a Linux server with SSL/TLS using Nginx and Certbot. This guide covers everything from the basics of encryption protocols to installing and renewing SSL certificates. Suitable for all skill levels, it includes steps for setting up Certbot, configuring Nginx, and ensuring your site is safe, enhancing its trustworthiness and SEO.

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Hardening SSL/TLS configuration (Mozilla guidelines)

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Learn to secure SSL/TLS configurations on Linux using Mozilla's guidelines. The guide covers choosing a security profile, updating configurations, verification methods, and automation scripts to maintain and enhance security against evolving cyber threats.

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Overview of Linux Filesystems: Ext4, XFS, Btrfs, ZFS, etc

linux filesystems ext4 xfs btrfs zfs

Explore the major Linux filesystems—Ext4, XFS, Btrfs, and ZFS—in this detailed guide discussing their features like journaling, scalability, and data integrity. Ideal for various applications, this article aids in choosing the right filesystem by outlining suitability for tasks ranging from regular computing to large data management, enhancing both performance and data protection.

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perf: Performance analysis tool

performance analysis tool optimization metrics

Explore the essentials of the Linux `perf` tool for system performance optimization in this article, ideal for system administrators and developers. Learn installation procedures across various Linux distributions, basic commands for profiling, monitoring kernel functions, generating flame graphs, and more. A dependable guide for those new to performance analysis or seeking to expand their skills.

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glow: Markdown rendering in the terminal

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This technical blog post introduces Glow, a terminal-based tool for rendering Markdown files within the Linux terminal. It highlights key features like stylized reading, pager support, responsiveness, and search integration. The article includes detailed installation instructions for different Linux distributions using package managers like `apt`, `dnf`, and `zypper’, along with practical usage examples and further reading links for those looking to enhance their terminal experience with Markdown.

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Using `diff` and `patch` for File Comparison and Patching

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Discover the powerful tools `diff` and `patch` for file comparison and patching on Linux. This guide provides step-by-step instructions on using `diff` to compare files line by line and `patch` to apply changes, streamlining the management of code and configuration file updates. Learn installation tips, basic and advanced usage through practical examples, and explore further resources to master these essential tools for developers, DevOps engineers, and system administrators.

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Resolving broken package dependencies

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Explore effective methods to resolve broken package dependencies in Linux using `apt`, `dnf`, and `zypper`. This guide provides step-by-step procedures tailored for Debian/Ubuntu, Fedora/Red Hat, and openSUSE systems, including updating package lists, upgrading systems, and employing specific commands like `--fix-broken install`. Additional resources for further understanding are also suggested.

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Resolving keyring issues in APT

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This blog post offers an in-depth guide on solving keyring problems in Linux package managers like APT, DNF, and Zypper. It details steps to update, reinstall, or manually install keyrings and trust new keys, ensuring smooth package updates and installations. It emphasizes careful key operations for maintaining system security.

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Understanding package pinning in APT

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This article delves into the practice of package pinning in APT, a key tool in Debian and Ubuntu for prioritizing certain package versions during updates, ensuring system stability. Detailed steps for setting pin preferences in `/etc/apt/preferences` are provided, alongside comparisons with other package managers like DNF for Fedora and Zypper for openSUSE, highlighting their unique approaches to package prioritization.

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Using AppImage for portable apps across Linux

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Discover the benefits of AppImage for portable applications across Linux systems. This guide discusses AppImage, a universal software package format enhancing compatibility and simplifying distribution across Linux without installation or root permissions. Learn to download, execute, and run AppImages, and integrate them using tools like AppImageLauncher for a seamless Linux experience.

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fzf: Fuzzy finder for searching files and text

fuzzy finder file search text search command line tool fzf

Discover the power of `fzf`, a command-line fuzzy finder for Linux. This guide explains how `fzf’ allows for quick, partial-match searches of files, directories, and text, enhancing user efficiency. It includes installation methods for various Linux distributions and offers practical examples and advanced tips to maximize productivity with `fzf`.

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Script fan speed control using `lm-sensors` and `pwmconfig`

lmsensors pwmconfig fan speed control linux hardware monitoring

The article provides a comprehensive guide on controlling fan speeds in Linux using `lm-sensors` and `pwmconfig`. It explains the installation, setup, and use of these tools to monitor and adjust fan speeds based on system temperatures, thus preventing hardware damage due to overheating. The guide also highlights the risks of improper configurations and emphasizes careful monitoring.

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