PowerShell treats everything as structured .NET objects. When piping output from one cmdlet to another, full objects—with properties and methods—are passed, enabling precise manipulation without complex text parsing.

Bash & Linux Commands treat data as plain text streams. Piping sends text output to the next command's input, often requiring tools like grep, awk, and sed for structured data processing.

Linux commands (e.g., ls, mkdir, cat, grep) are standalone executables or shell builtins, each performing a focused task via direct OS interaction.

PowerShell is a full-featured modern scripting language supporting functions, variables, and object-oriented concepts. It's optimized for enterprise automation in environments like Azure, Microsoft 365, and Active Directory.

Bash Scripting combines Linux commands with shell flow control (loops, conditionals) for automation. Powerful for Unix/Linux sysadmin tasks, but for advanced needs it often defers to languages like Python or Perl.

Feature	PowerShell	Bash Scripting / Linux Commands
Data Type in Pipeline	Objects with properties and methods	Plain text strings
Primary Use Case	Configuration management, automation, Windows/Azure admin	System administration, text processing, general Unix/Linux automation
Integration	Deep .NET framework, WMI, Windows APIs	Direct POSIX utilities and kernel/filesystem access
Syntax	Consistent verb-noun (e.g., Get-ChildItem)	Varied command names and options

Bash powers Linux and macOS system administration, file management, and automation.

File and Directory Management

• ls: List directory contents. Use ls -l for detailed view.
• pwd: Print current working directory.
• cd [directory]: Change directory. e.g., cd .. (up), cd ~ (home).
• mkdir [directory]: Create a new directory.
• touch [file]: Create empty file or update timestamp.
• cp [source] [dest]: Copy files/directories.
• mv [source] [dest]: Move or rename.
• rm [file/dir]: Delete. Use rm -r for directories.
• cat [file]: Display file contents.
• less [file]: Paginated file viewer.

Text Processing and Searching

• grep [pattern] [file]: Search for patterns.
• head [file]: Show first lines.
• tail [file]: Show last lines. tail -f for live monitoring.
• awk: Pattern scanning and processing language.
• sed: Stream editor for text transformation.
• sort: Sort lines.
• cut: Extract sections from lines.

System and Process Management

• ps: List processes. ps aux for details.
• top: Real-time system/resource view.
• kill [PID]: Terminate process.
• df: Disk space usage.
• du: Directory space usage.
• chmod [perms] [file]: Change permissions.
• chown [owner] [file]: Change owner/group.
• sudo: Run as superuser.
• man [command]: View manual/help.

Scripting and Utilities

• echo [text]: Print text/variables.
• >: Redirect output (overwrite).
• >>: Append output.
• |: Pipe output to next command.
• history: Show command history.
• find [path] -name [pattern]: Search files.
• tar: Archive/extract files.
• curl / wget: Download web content.
• env: View environment variables.
• clear: Clear screen.

Linux follows the Filesystem Hierarchy Standard (FHS), organizing everything under the root directory /. This structure ensures consistency across distributions.

Below is an overview of the main directories and their purposes:

• /: The root directory — top of the filesystem hierarchy.
• /bin: Essential user command binaries (e.g., ls, cp, mv) needed in single-user mode.
• /boot: Boot loader files, including the Linux kernel and initramfs.
• /dev: Device files (e.g., /dev/sda for disks, /dev/null).
• /etc: System-wide configuration files (e.g., /etc/passwd, /etc/fstab).
• /home: Users' personal home directories (except root).
• /lib / /lib64: Essential shared libraries and kernel modules.
• /media: Mount points for removable media (e.g., USB drives, CDs).
• /mnt: Temporary mount points for filesystems.
• /opt: Optional add-on software packages (third-party apps).
• /proc: Virtual filesystem with process and kernel information (e.g., /proc/cpuinfo).
• /root: Home directory for the root user.
• /run: Runtime variable data (e.g., PID files, temporary sockets since boot).
• /sbin: Essential system binaries for administration (e.g., fdisk, reboot — often root-only).
• /srv: Site-specific data served by the system (e.g., web or FTP files).
• /sys: Virtual filesystem for kernel and device information/export.
• /tmp: Temporary files (often cleared on reboot).
• /usr: Read-only user data; secondary hierarchy with binaries (/usr/bin), libraries (/usr/lib), documentation, etc.
• /var: Variable data (logs /var/log, spool files, caches — persists across reboots).

Understanding this structure helps navigate and administer Linux systems effectively.

PowerShell is cross-platform, object-oriented, and uses consistent Verb-Noun naming.

Core Functionality and Help

• Get-Help [cmdlet]: View help. -Examples for usage.
• Get-Command: List available cmdlets/functions/aliases.
• Get-Member: Show object properties/methods.
• Get-Alias: List aliases (e.g., ls → Get-ChildItem).

File and Folder Management

• Get-ChildItem (ls, dir, gci): List files/folders.
• Set-Location (cd): Change directory.
• New-Item: Create file or directory.
• Copy-Item (cp): Copy items.
• Move-Item (mv): Move items.
• Remove-Item (rm): Delete items.
• Get-Content (gc): Read file.
• Set-Content: Write/replace file content.
• Out-File: Send output to file.

System and Process Management

• Get-Service: List services.
• Start-Service / Stop-Service: Control services.
• Get-Process (ps): List processes.
• Start-Process / Stop-Process: Manage processes.
• Test-Connection: Advanced ping equivalent.
• Get-EventLog: Read event logs.
• Restart-Computer / Stop-Computer: Reboot/shutdown.
• Set-ExecutionPolicy: Allow script execution.

Data Handling and Scripting

• Where-Object (?): Filter objects.
• Select-Object: Select properties.
• Export-Csv / Import-Csv: CSV handling.
• ConvertTo-Html / ConvertTo-Json: Format conversions.
• ForEach-Object (%): Loop over pipeline items.
• Invoke-Command: Run remotely.
• Write-Host: Console output.
• Measure-Command: Time execution.