Get-Alias (alias: gal)

$ Get-Alias

CommandType     Name                                               Version    Source
-----------     ----                                               -------    ------
Alias           % -> ForEach-Object
Alias           ? -> Where-Object
Alias           ac -> Add-Content
Alias           cat -> Get-Content
Alias           cd -> Set-Location
Alias           chdir -> Set-Location
Alias           clc -> Clear-Content
Alias           clear -> Clear-Host
Alias           clhy -> Clear-History
Alias           cli -> Clear-Item
Alias           clp -> Clear-ItemProperty
Alias           cls -> Clear-Host
Alias           clv -> Clear-Variable
Alias           cnsn -> Connect-PSSession
Alias           compare -> Compare-Object
Alias           copy -> Copy-Item
Alias           cp -> Copy-Item
Alias           cpi -> Copy-Item
Alias           cpp -> Copy-ItemProperty
Alias           cvpa -> Convert-Path
Alias           dbp -> Disable-PSBreakpoint
Alias           del -> Remove-Item
Alias           diff -> Compare-Object
Alias           dir -> Get-ChildItem
Alias           dnsn -> Disconnect-PSSession
Alias           ebp -> Enable-PSBreakpoint
Alias           echo -> Write-Output
Alias           epal -> Export-Alias
Alias           epcsv -> Export-Csv
Alias           erase -> Remove-Item
Alias           etsn -> Enter-PSSession
Alias           exsn -> Exit-PSSession
Alias           fc -> Format-Custom
Alias           fhx -> Format-Hex                                  7.0.0.0    Microsoft.PowerShell.Utility
Alias           fl -> Format-List
Alias           foreach -> ForEach-Object
Alias           ft -> Format-Table
Alias           fw -> Format-Wide
Alias           gal -> Get-Alias
Alias           gbp -> Get-PSBreakpoint
Alias           gc -> Get-Content
Alias           gcb -> Get-Clipboard                               7.0.0.0    Microsoft.PowerShell.Management
Alias           gci -> Get-ChildItem
Alias           gcm -> Get-Command
Alias           gcs -> Get-PSCallStack
Alias           gdr -> Get-PSDrive
Alias           gerr -> Get-Error
Alias           ghy -> Get-History
Alias           gi -> Get-Item
Alias           gin -> Get-ComputerInfo                            7.0.0.0    Microsoft.PowerShell.Management
Alias           gjb -> Get-Job
Alias           gl -> Get-Location
Alias           gm -> Get-Member
Alias           gmo -> Get-Module
Alias           gp -> Get-ItemProperty
Alias           gps -> Get-Process
Alias           gpv -> Get-ItemPropertyValue
Alias           group -> Group-Object
Alias           gsn -> Get-PSSession
Alias           gsv -> Get-Service
Alias           gtz -> Get-TimeZone                                7.0.0.0    Microsoft.PowerShell.Management
Alias           gu -> Get-Unique
Alias           gv -> Get-Variable
Alias           h -> Get-History
Alias           history -> Get-History
Alias           icm -> Invoke-Command
Alias           iex -> Invoke-Expression
Alias           ihy -> Invoke-History
Alias           ii -> Invoke-Item
Alias           ipal -> Import-Alias
Alias           ipcsv -> Import-Csv
Alias           ipmo -> Import-Module
Alias           irm -> Invoke-RestMethod
Alias           iwr -> Invoke-WebRequest
Alias           kill -> Stop-Process
Alias           ls -> Get-ChildItem
Alias           man -> help
Alias           md -> mkdir
Alias           measure -> Measure-Object
Alias           mi -> Move-Item
Alias           mount -> New-PSDrive
Alias           move -> Move-Item
Alias           mp -> Move-ItemProperty
Alias           mv -> Move-Item
Alias           nal -> New-Alias
Alias           ndr -> New-PSDrive
Alias           ni -> New-Item
Alias           nmo -> New-Module
Alias           nsn -> New-PSSession
Alias           nv -> New-Variable
Alias           ogv -> Out-GridView
Alias           oh -> Out-Host
Alias           popd -> Pop-Location
Alias           ps -> Get-Process
Alias           pushd -> Push-Location
Alias           pwd -> Get-Location
Alias           r -> Invoke-History
Alias           rbp -> Remove-PSBreakpoint
Alias           rcjb -> Receive-Job
Alias           rcsn -> Receive-PSSession
Alias           rd -> Remove-Item
Alias           rdr -> Remove-PSDrive
Alias           ren -> Rename-Item
Alias           ri -> Remove-Item
Alias           rjb -> Remove-Job
Alias           rm -> Remove-Item
Alias           rmdir -> Remove-Item
Alias           rmo -> Remove-Module
Alias           rni -> Rename-Item
Alias           rnp -> Rename-ItemProperty
Alias           rp -> Remove-ItemProperty
Alias           rsn -> Remove-PSSession
Alias           rv -> Remove-Variable
Alias           rvpa -> Resolve-Path
Alias           sajb -> Start-Job
Alias           sal -> Set-Alias
Alias           saps -> Start-Process
Alias           sasv -> Start-Service
Alias           sbp -> Set-PSBreakpoint
Alias           scb -> Set-Clipboard                               7.0.0.0    Microsoft.PowerShell.Management
Alias           select -> Select-Object
Alias           set -> Set-Variable
Alias           shcm -> Show-Command
Alias           si -> Set-Item
Alias           sl -> Set-Location
Alias           sleep -> Start-Sleep
Alias           sls -> Select-String
Alias           sort -> Sort-Object
Alias           sp -> Set-ItemProperty
Alias           spjb -> Stop-Job
Alias           spps -> Stop-Process
Alias           spsv -> Stop-Service
Alias           start -> Start-Process
Alias           stz -> Set-TimeZone                                7.0.0.0    Microsoft.PowerShell.Management
Alias           sv -> Set-Variable
Alias           tee -> Tee-Object
Alias           type -> Get-Content
Alias           where -> Where-Object
Alias           wjb -> Wait-Job
Alias           write -> Write-Output

$ Get-Alias -Definition Get-ChildItem

or

$ gal -d Get-ChildItem

CommandType     Name                                               Version    Source
-----------     ----                                               -------    ------
Alias           dir -> Get-ChildItem
Alias           gci -> Get-ChildItem
Alias           ls -> Get-ChildItem