Sr Technical Writer
PowerShell and Linux have become increasingly intertwined. With the advancements in cross-platform PowerShell (pwsh) and the Windows Subsystem for Linux (WSL), you can now effortlessly integrate Linux commands into your PowerShell workflow, regardless of whether you’re working on Windows, Linux, or macOS.
In essence, you can use PowerShell to manage and automate tasks within a Linux environment installed via WSL, or you can install PowerShell directly on a Linux machine and use it as your shell and scripting language there. This powerful combination allows developers and administrators to seamlessly utilize both Windows and Linux tools and workflows.
In this tutorial, you’ll explore how to tap into Linux capabilities within PowerShell, uncover compatibility best practices, and maximize the benefits of contemporary command-line tools, all tailored to your preferred operating system.
Key Takeaways
Three methods: native pwsh
on Linux, Windows PowerShell + WSL integration, or PowerShell Remoting into a Linux host.
Compatibility layer: PowerShell passes unknown cmds to /bin/bash
via WSL or invokes native binaries on Linux.
Code parity: 95 % of common Bash one‑liners (grep
, awk
, sed
) run unchanged inside pwsh
when $env:PATH
includes GNU coreutils.
Use‑cases: cross‑platform scripts, DevOps pipelines, mixed Windows/Linux fleets.
PowerShell and Bash are both powerful command-line shells, but they differ significantly in design, syntax, and capabilities. Here’s a detailed comparison to help you understand their strengths and use-cases:
Feature | Bash (GNU) | PowerShell 7 (pwsh) |
---|---|---|
Data Handling | Text streams only (plain strings, lines) | Structured .NET objects (can output as JSON, XML) |
OS Support | Linux, macOS, WSL, some Windows (via Cygwin) | Windows, Linux, macOS, WSL (fully cross-platform) |
Package Manager | apt , dnf , yum , pacman , brew |
winget , choco , apt , plus Install-Module for PowerShell Gallery |
Pipeline | Passes text via \n (stdout/stdin) |
Passes rich objects between commands (object pipeline) |
Scripting Syntax | POSIX shell syntax, terse, symbolic | Verb-Noun cmdlets, .NET-based, more verbose |
Extensibility | Shell scripts, external binaries, aliases | Cmdlets, modules, classes, external binaries |
Remote Execution | SSH, scp , rsync , expect |
PowerShell Remoting (WinRM, SSH), Invoke-Command |
Tab Completion | Bash completion, programmable | Advanced, context-aware, works with objects |
Error Handling | Exit codes, set -e , traps |
Try/Catch/Finally, structured exceptions |
Interactivity | Readline, history, job control | PSReadLine, history, background jobs, transcripts |
Integration | Deep integration with Unix tools | Deep integration with Windows, .NET, and REST APIs |
Default Location | /bin/bash , /usr/bin/bash |
pwsh (cross-platform), powershell.exe (Windows) |
PowerShell is ideal for automation, system administration, and tasks requiring structured data manipulation, especially in mixed or Windows-centric environments.
Bash excels at quick scripting, Unix/Linux system management, and chaining classic command-line tools.
PowerShell can invoke Bash commands (especially on WSL), but Bash cannot natively process PowerShell objects.
Both shells are now available cross-platform, enabling flexible workflows for developers and sysadmins.
For most DevOps and automation tasks, choose the shell that best matches your environment, scripting style, and integration needs.
Takeaway: PowerShell can host Bash; Bash cannot natively interpret PowerShell objects.
On Ubuntu and Debian based Linux distributions, you can install PowerShell using the following commands.
For Debian/Ubuntu-based systems, install prerequisites:
# Install necessary packages for adding Microsoft repository and installing PowerShell
sudo apt-get install -y wget apt-transport-https software-properties-common
# Add Microsoft repository and key
sudo apt update && \
sudo apt install -y wget gnupg && \
# Download and add Microsoft's GPG key to the trusted keys list
wget -qO- https://packages.microsoft.com/keys/microsoft.asc | sudo tee /etc/apt/trusted.gpg.d/microsoft.asc && \
# Add the Microsoft repository for PowerShell
sudo add-apt-repository "deb [arch=$(dpkg --print-architecture)] https://packages.microsoft.com/ubuntu/22.04/prod jammy main"
# Update package list and install PowerShell
sudo apt update && sudo apt install -y powershell
# Launch PowerShell
pwsh
# Run a Linux binary to verify the environment
uname -a
OutputLinux penguin 6.5.0-23-generic #24-Ubuntu ...
On Windows, you can use the Windows Subsystem for Linux (WSL) to run Linux commands in PowerShell.
On Windows:
# Enable WSL & install Ubuntu‑24.04 distro
wsl --install -d Ubuntu-24.04
PowerShell ↔ Linux command pass‑through:
PS C:\> wsl ls -lah /home
-rw-r--r-- 1 root root 0 Jul 1 ...
PS C:\> wsl cat /etc/os-release | sls VERSION
VERSION="22.04.4 LTS (Jammy Jellyfish)"
To install PowerShell (pwsh
) inside Ubuntu WSL, run:
sudo apt update && sudo apt install -y wget apt-transport-https software-properties-common
wget -q "https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb"
sudo dpkg -i packages-microsoft-prod.deb
sudo apt update
sudo apt install -y powershell
Now you can run PowerShell commands inside Ubuntu WSL:
PS /home/ubuntu> pwsh
Note: You can use GPT‑4o prompt example to automate WSL installs: “Write a PowerShell script that installs WSL 2, sets Ubuntu as default, then creates a bash alias within .bashrc.”
You can also use PowerShell Remoting to run Linux commands from Windows PowerShell.
# Connect to a Linux host
Enter-PSSession -ComputerName <linux-host>
# Run Linux commands
ls -l /home
# Exit the session
Create mixed.ps1
with:
# Call native Linux grep from PowerShell
wsl grep -R "ERROR" /var/log/syslog | Select‑String -Pattern 'auth'
# Pipe PS object to bash via JSON
Get‑Process | ConvertTo‑Json | wsl jq '.[] | select(.CPU > 1)'
Run from Windows or Linux host.
Alias Bash cmd in PowerShell profile ($HOME/.config/powershell/Microsoft.PowerShell_profile.ps1
):
Set‑Alias grep wsl grep
Set‑Alias jq wsl jq
# Run from Windows or Linux host
.\mixed.ps1
When working across Linux (Bash) and Windows (PowerShell), many administrative and scripting tasks are similar in intent but differ in syntax and available commands.
Below is a quick reference table showing how to perform common file and system operations in both environments. This can help you adapt scripts or commands when moving between Bash and PowerShell, especially in hybrid or WSL (Windows Subsystem for Linux) setups.
Task | Bash Command | PowerShell Command |
---|---|---|
Find large files | du -ah . | sort -h | tail -n 20 |
Get-ChildItem -Recurse | Sort-Object Length -Descending | Select-Object -First 20 |
Replace text in files | sed -i 's/foo/bar/g' *.txt |
Get-ChildItem *.txt | ForEach-Object { (Get-Content $_) -replace 'foo','bar' | Set-Content $_ } |
Update packages (Deb) | sudo apt update && sudo apt upgrade |
sudo apt update; sudo apt upgrade (run inside WSL or from a remote session) |
This table is a starting point—many more tasks can be translated similarly. When porting scripts, always check for command-line differences and test in your target environment.
Pros | Cons |
---|---|
Cross-Platform Compatibility: PowerShell runs natively on Windows, Linux, and macOS, whereas Bash is primarily Linux-based. | Learning Curve: PowerShell’s syntax and object-oriented approach can be unfamiliar to users accustomed to Bash scripting. |
PowerShell Remoting: Enables running Linux commands from Windows PowerShell, supporting remote management across platforms. | Feature Gaps: Some native Linux utilities or scripts may not function identically in PowerShell, requiring adaptation or workarounds. |
WSL Integration: Seamlessly run Linux commands within PowerShell using Windows Subsystem for Linux, bridging both environments. | Performance Overhead: Executing Linux commands via WSL or remoting can introduce additional latency compared to running them natively in Bash. |
PowerShell Core: Available on all major platforms, allowing direct execution of many Linux commands and scripts. | Ecosystem Differences: Not all PowerShell modules are available or fully supported on Linux, which can limit functionality. |
Performance Insights: PowerShell pipelines efficiently handle large objects and structured data, and can process complex tasks with fewer external dependencies. | Resource Usage: PowerShell may consume more memory and CPU than lightweight Bash scripts, especially for simple or repetitive tasks. |
Script Portability: PowerShell scripts can be more portable across OSes due to consistent cmdlet behavior, reducing the need for OS-specific logic. | Startup Time: PowerShell typically has a longer startup time than Bash, which can impact performance for short-lived scripts or frequent invocations. |
Common Error | How to Troubleshoot |
---|---|
PowerShell Remoting: Attempting to use Enter-PSSession to connect to a Linux host. |
If you receive connection errors, use ssh instead of Enter-PSSession for Linux systems, as Enter-PSSession is primarily for Windows remoting. |
WSL Integration: Linux commands fail or are not recognized in PowerShell. | Ensure you prefix Linux commands with wsl (e.g., wsl ls ). If the command still fails, verify WSL is installed and available in your environment. |
PowerShell Core: PowerShell commands not found or incompatible on Linux/macOS. | Use pwsh to launch PowerShell Core, which is cross-platform. If pwsh is not found, install PowerShell Core for your OS. |
Script Portability: Scripts behave differently across platforms. | Check for OS-specific cmdlets or paths. Use consistent, cross-platform cmdlets and test scripts on all target platforms. |
Startup Time: PowerShell starts slowly, especially on Linux. | If startup is slow, ensure you are using the latest version of PowerShell Core (pwsh ). Disable unnecessary modules in your profile to improve performance. |
Yes, PowerShell can run Linux commands, but how you do it depends on your environment:
On Windows with WSL (Windows Subsystem for Linux):
You can invoke Linux commands from PowerShell by prefixing them with wsl
. For example:
wsl ls -la /home
wsl grep "pattern" file.txt
This runs the command inside your default WSL distribution and returns the output to PowerShell.
On Linux or macOS (with PowerShell Core):
PowerShell Core (pwsh
) runs natively on Linux and macOS. You can execute native Linux commands directly, just as you would in Bash:
ls -la /var/log
grep "error" /var/log/syslog
PowerShell will pass these commands to the underlying shell.
From PowerShell scripts:
You can use the Invoke-Expression
cmdlet or call commands directly:
Invoke-Expression "ls -l /tmp"
Note: On Windows without WSL, native Linux commands are not available unless you use a compatibility layer (like Cygwin) or WSL. Some Linux commands may behave differently or may not be available, depending on your environment.
Yes, PowerShell Core (now simply called “PowerShell”) is fully supported on Linux.
Installation:
You can install PowerShell on most major Linux distributions. For example, on Ubuntu:
# Install prerequisites
sudo apt-get update
sudo apt-get install -y wget apt-transport-https software-properties-common
# Import the Microsoft repository
wget -q "https://packages.microsoft.com/config/ubuntu/$(lsb_release -rs)/packages-microsoft-prod.deb"
sudo dpkg -i packages-microsoft-prod.deb
# Install PowerShell
sudo apt-get update
sudo apt-get install -y powershell
# Start PowerShell
pwsh
Usage:
Once installed, launch PowerShell by typing pwsh
in your terminal.
Features:
Most core PowerShell features and modules work on Linux, but some Windows-specific modules (like those for managing Windows services or the registry) are not available.
Yes, you can use Bash and PowerShell together in several ways:
From PowerShell, call Bash commands:
On Windows with WSL:
wsl echo "Hello from Bash"
wsl uname -a
On Linux/macOS, just call Bash commands directly:
bash -c "echo Hello from Bash"
From Bash, call PowerShell scripts:
If PowerShell (pwsh
) is installed, you can invoke PowerShell scripts from Bash:
pwsh -Command "Get-Process | Where-Object { \$_.CPU -gt 100 }"
Hybrid scripts:
You can write scripts that mix Bash and PowerShell by invoking one from the other as needed. For example, a Bash script can call a PowerShell script for Windows-specific tasks, and vice versa.
Interoperability Example:
# PowerShell script calling a Bash command
$result = wsl whoami
Write-Output "Current WSL user: $result"
# Bash script calling a PowerShell command
pwsh -Command "Get-Date"
Tip: When mixing scripts, be mindful of environment variables, path formats, and output encoding, as these can differ between shells.
You only need WSL (Windows Subsystem for Linux) if you want to run native Linux binaries and commands from PowerShell on Windows.
On Windows:
wsl
prefix.On Linux/macOS:
PowerShell Core (pwsh
) runs natively, and you can execute Linux commands directly—no WSL required.
Example (Windows with WSL):
# PowerShell script calling a Bash command
$result = wsl whoami
Write-Output "Current WSL user: $result"
In this tutorial, you learned how to bridge the gap between Bash and PowerShell, enabling seamless interoperability between Linux and Windows command-line environments. This includes how to invoke PowerShell commands from Bash and vice versa, writing hybrid scripts that leverage both shells for cross-platform automation, and practical examples of calling Bash from PowerShell and PowerShell from Bash.
Additionally, key considerations for environment variables, path formats, and output encoding when mixing shells were covered. The role of WSL (Windows Subsystem for Linux) in running Linux commands on Windows, and how PowerShell Core enables native Linux command execution on Linux/macOS were also explored. By mastering these techniques, you can streamline your workflow, automate complex tasks across platforms, and make the most of both shell environments.
Next Steps:
These resources will help you become even more proficient and productive in your terminal journey.
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I help Businesses scale with AI x SEO x (authentic) Content that revives traffic and keeps leads flowing | 3,000,000+ Average monthly readers on Medium | Sr Technical Writer @ DigitalOcean | Ex-Cloud Consultant @ AMEX | Ex-Site Reliability Engineer(DevOps)@Nutanix
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