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authorMax Schumacher <maximilianbschumacher@gmail.com>2020-07-07 12:32:16 +0200
committerGitHub <noreply@github.com>2020-07-07 12:32:16 +0200
commitc4fcf95610a4eb6a7a9e15d643e6f0811e49df59 (patch)
treedd93c0fa6f4664ff14a3c9c91fd6ab068cb67ebb
parente70ca8a7c6025558962179f60407e6bf09fb0683 (diff)
parent0f19d90383916c72fa1872e192538ef6c2f7dc5d (diff)
Merge pull request #3927 from AndrewDavis1191/patch-1
[powershell/en] Adding things people may find useful
-rw-r--r--powershell.html.markdown34
1 files changed, 31 insertions, 3 deletions
diff --git a/powershell.html.markdown b/powershell.html.markdown
index 5d74024d..6efd984c 100644
--- a/powershell.html.markdown
+++ b/powershell.html.markdown
@@ -55,6 +55,11 @@ The tutorial starts here:
```powershell
# As you already figured, comments start with #
+<#
+ Multi-line comments
+ like so
+#>
+
# Simple hello world example:
echo Hello world!
# echo is an alias for Write-Output (=cmdlet)
@@ -68,6 +73,8 @@ $aString="Some string"
# Or like this:
$aNumber = 5 -as [double]
$aList = 1,2,3,4,5
+# Reverse an array *Note this is a mutation on the existing array
+[array]::Reverse($aList)
$anEmptyList = @()
$aString = $aList -join '--' # yes, -split exists also
$aHashtable = @{name1='val1'; name2='val2'}
@@ -100,6 +107,10 @@ echo "Bound arguments in a function, script or code block: $PSBoundParameters"
echo "Unbound arguments: $($Args -join ', ')."
# More builtins: `help about_Automatic_Variables`
+# Find the datatype of variables or properties you're working with
+$true.GetType()
+$aHashtable.name2.GetType()
+
# Inline another file (dot operator)
. .\otherScriptName.ps1
@@ -184,7 +195,7 @@ Get-Process | Sort-Object ID -Descending | Select-Object -First 10 Name,ID,VM `
Get-EventLog Application -After (Get-Date).AddHours(-2) | Format-List
# Use % as a shorthand for ForEach-Object
-(a,b,c) | ForEach-Object `
+('a','b','c') | ForEach-Object `
-Begin { "Starting"; $counter = 0 } `
-Process { "Processing $_"; $counter++ } `
-End { "Finishing: $counter" }
@@ -198,12 +209,13 @@ ps | Format-Table ID,Name,@{n='VM(MB)';e={'{0:n2}' -f ($_.VM / 1MB)}} -autoSize
### Functions
# The [string] attribute is optional.
-function foo([string]$name) {
+# Function names should follow Verb-Noun convention
+function Get-Foo([string]$name) {
echo "Hey $name, have a function"
}
# Calling your function
-foo "Say my name"
+Get-Foo "Say my name"
# Functions with named parameters, parameter attributes, parsable documentation
<#
@@ -283,7 +295,22 @@ Pop-Location # change back to previous working directory
# Unblock a directory after download
Get-ChildItem -Recurse | Unblock-File
+# You can also pass arguments to a Function with a hash table
+# This is called Splatting
+# Normal Command
+Export-Csv -InputObject $csv -Path 'c:\mypath' -Encoding UTF8 -NoTypeInformation
+# With Splatting
+$csvArguments = @{
+ InputObject = $csv
+ Path = 'c:\mypath'
+ Encoding = 'UTF8'
+ NoTypeInformation = $true
+}
+Export-Csv @csvArguments
+
# Open Windows Explorer in working directory
+Invoke-Item .
+# Or the alias
ii .
# Any key to exit
@@ -318,6 +345,7 @@ Interesting Projects
* [PSGet](https://github.com/psget/psget) NuGet for PowerShell
* [PSReadLine](https://github.com/lzybkr/PSReadLine/) A bash inspired readline implementation for PowerShell (So good that it now ships with Windows10 by default!)
* [Posh-Git](https://github.com/dahlbyk/posh-git/) Fancy Git Prompt (Recommended!)
+* [Oh-My-Posh](https://github.com/JanDeDobbeleer/oh-my-posh) Shell customization similar to the popular Oh-My-Zsh on Mac
* [PSake](https://github.com/psake/psake) Build automation tool
* [Pester](https://github.com/pester/Pester) BDD Testing Framework
* [Jump-Location](https://github.com/tkellogg/Jump-Location) Powershell `cd` that reads your mind