updates and improvements

CrashCourse.md

@@ -11,6 +11,17 @@ notepad "$(Split-Path -Parent $PROFILE.CurrentUserAllHosts)\my-script.ps1"
 codium "$(Split-Path -Parent $PROFILE.CurrentUserAllHosts)\my-script.ps1"
 ```
 
+# Get-Help
+
+You can learn about pretty much anything in PowerShell with the `Get-Help` cmdlet.
+
+```powershell
+Update-Help
+Get-Help Get-Help
+Get-Help New-Item
+Get-Help Get-ChildItem
+```
+
 # variables
 
 [PowerShell is as case-insensitive as possible.](https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_case-sensitivity?view=powershell-7.3) This means `$MyInvocation` works just the same as `$mYinVoCAtiOn` among other things. Coming from a Unix background and preferring some consistency I like to pretend it is case-sensitive so in this repo I'll strive for that but it's worth keeping in mind. Especially since **the Microsoft docs use case a lot** in variable and cmdlet names.
@@ -38,6 +49,11 @@ else {
   Write-Host "value is not a y"
 }
 
+if (-not $some_switch) {
+  # a bang ! also works...
+}
+
+$num = 0
 while ($num -lt 50) {
   $num = $num + 1
 }
@@ -59,11 +75,12 @@ There are [a lot of different powers](https://learn.microsoft.com/en-us/powershe
 
 ```powershell
 # Name-And-Age.ps1
-if ($silent) { exit }
+if (-not $silent) {
   Write-Host "Hello $name"
   if ($age) {
     Write-Host "according to the -age you provided you are: $age"
   }
+}
 ```
 
 And run like this:
@@ -74,16 +91,6 @@ Name-And-Age.ps1 -name "Rose" -age "27"
 Name-And-Age.ps1 "Rose" "27"
 ```
 
-# Get-Help
-
-You can learn about the available `param` list for pretty much anything in PowerShell with the `Get-Help` cmdlet.
-
-```powershell
-Get-Help Get-Help
-Get-Help New-Item
-Get-Help Name-And-Age.ps1
-```
-
 # functions
 
 Functions use `param` too (instead of parenthesis like other languages). The last value is the `return` result, (which you can also use to `return` early... or just regularly if you want)

Scripts/Download-Video.ps1

@@ -5,8 +5,8 @@ param(
   [int]$wait = 60 * 10
 )
 
-if (!(Get-Command "yt-dlp.exe" -ErrorAction SilentlyContinue)) {
+if (-not (Get-Command "yt-dlp" -ErrorAction SilentlyContinue)) {
-  Write-Host "There's no yt-dlp.exe to work with!"
+  Write-Host "There's no yt-dlp to work with!"
   exit
 }
 
@@ -14,7 +14,7 @@ if ($out -notmatch '\\$') {
   $out += "\"
 }
 
-if (!(Test-Path $out -PathType container)) {
+if (-not (Test-Path $out -PathType container)) {
   New-Item $out -ItemType container
 }
 
@@ -28,7 +28,7 @@ if ($url) {
 else {
   while ($true) {
     $url = Read-host “URL”
-    if (!$url) { break }
+    if (-not $url) { break }
     Start-Process yt-dlp -ArgumentList "$ytdlp_options $url"
   }
 }

Scripts/Scale-Pixel.ps1

@@ -5,14 +5,14 @@ param(
     $scale = 128
 )
 
-if (!(Get-Command "magick.exe" -ErrorAction SilentlyContinue)) {
+if (-not (Get-Command "magick" -ErrorAction SilentlyContinue)) {
-    Write-Host "There's no magick.exe to work with!"
+    Write-Host "There's no magick to work with!"
     exit
 }
 
 if (Test-Path $in -PathType container) {
     $out_dir = "$out\x$scale\"
-    if (!(Test-Path $out_dir)) {
+    if (-not (Test-Path $out_dir)) {
         New-Item "$out_dir" -ItemType directory
     }
     foreach ($image in Get-ChildItem "$in*" -Include *.png, *.jpg, *.gif) {

Scripts/Stream.ps1

@@ -0,0 +1,22 @@
+param(
+  [string]$url = "",
+  [string]$record = "~/Videos/Streamed/{title}.ts",
+  [int]$retryinterval = 30,
+  [string]$quality = "best",
+  [switch]$norecord
+)
+
+if ($url) {
+  if (-not (Get-Command "streamlink" -ErrorAction SilentlyContinue)) {
+    Write-Host "There's no streamlink to work with!"
+    exit
+  }
+
+  $streamlink_opts = "--default-stream $quality"
+  $streamlink_opts = " --retry-streams $retryinterval"
+  if ($out -and -not $norecord) {
+    $streamlink_opts = " --record $out"
+  }
+
+  Start-Process streamlink -ArgumentList "$streamlink_opts $url"
+}

Scripts/Update-And-Clean.ps1

@@ -1,13 +1,25 @@
-param([switch]$elevated)
+param(
+  [switch]$elevated,
+  [switch]$CleanOnly
+)
+
+if ((Get-Command "scoop" -ErrorAction SilentlyContinue) -and -not $elevated) {
+  if (-not $CleanOnly) {
+    scoop update
+    scoop update --all
+  }
+  scoop cache rm *
+}
+
 # If not in an Administrator environment
-If (!(New-Object Security.Principal.WindowsPrincipal $(
+If (-not (New-Object Security.Principal.WindowsPrincipal $(
       [Security.Principal.WindowsIdentity]::GetCurrent()
     )).IsInRole(
     [Security.Principal.WindowsBuiltinRole]::Administrator
   )
 ) {
   # and elevating hasn't already been tried
-  if (!$elevated) {
+  if (-not $elevated) {
     # attempt to become Administrator by re-invoking this script
     Start-Process PowerShell -Verb RunAs -ArgumentList (
       '-file "{0}" -elevated' -f ($MyInvocation.MyCommand.Definition)
@@ -17,17 +29,15 @@ If (!(New-Object Security.Principal.WindowsPrincipal $(
   exit
 }
 
-if (!(Get-Module PSWindowsUpdate)) {
+
+if (-not $CleanOnly) {
+  if (-not (Get-Command "Get-WindowsUpdate")) {
     Install-Module PSWindowsUpdate
   }
-
   Get-WindowsUpdate -AcceptAll -Install
-if (Get-Command "scoop.exe" -ErrorAction SilentlyContinue) {
-  scoop update
-  scoop update --all
-  scoop cache rm *
 }
-if (Get-Command "bleachbit.exe" -ErrorAction SilentlyContinue) {
+
+if (Get-Command "bleachbit" -ErrorAction SilentlyContinue) {
   # Clean everything selected in the UI last time it was run.
   # So... run The UI to set things up initially.
   bleachbit --preset --clean

profile.ps1

@@ -23,7 +23,7 @@ function Install-Scoop {
 }
 
 function Install-BleachBit {
-  if (!(Get-Command "git.exe" -ErrorAction SilentlyContinue)) {
+  if (-not (Get-Command "git" -ErrorAction SilentlyContinue)) {
     scoop install git
   }
   scoop bucket add extras