mv demos into public from private

demos/day1/1-variable.ps1

+# Create variables by assigning values
+$total = 150
+$diff = 0.25
+# Math
+$result = $total * $diff
+# Output result
+$result
+
+# Show variable values in text
+$text = "$result is {0:0%} of $total" -f $diff
+$text
+
+# Assign multiple variables
+$x = $y = $z = 10
+$x
+$y
+$z
+
+# Assign different values to several variables
+$var1, $var2 = 50, 100
+$var1
+$var2

demos/day1/10-create_hash_table.ps1

+# Create a new hash table
+$mylist = @{First = "John"; Last = "Doe"; Mid = "Bon"; Age = 35}
+
+# Access the value for the key "Last"
+$mylist["Last"]
+$mylist.Last
+
+# Access values from multiple keys
+$mylist["First", "Mid", "Last"]
+
+# Return all keys
+$mylist.Keys
+
+# Return all Values
+$mylist.values
+
+# Output all elements
+$mylist[$mylist.keys]

demos/day1/11-modify_hash_table.ps1

+# Store array in hash table
+$list = @{ element1 = 5; array1 = 1..5; array2 = 6, 7, 8}
+
+# Adding new keys
+$mylist = @{First = "John"; Last = "Doe"; Mid = "Bon"; Age = 35}
+$mylist.Date = Get-Date
+$mylist["Location"] = "Germany"
+$mylist
+
+# Manipulating values
+$mylist.Mid = "Kimberly"
+$mylist["Location"] = "Oregon"
+
+# Remove value
+$mylist.Remove("Date")
\ No newline at end of file

demos/day1/2-find_variables.ps1

+# List current Variables
+
+Get-Variable
+Get-ChildItem variable:
+
+# Output specific variable
+
+$x = 10
+Get-Variable x
+Get-ChildItem variable:x
+
+# Verify a variable using Test-Path
+
+Test-Path variable:x
+
+# Deleting Variables
+
+Remove-Variable x
+del variable:x

demos/day1/3-variable_description.ps1

+# List of automatic variables and their description
+Get-Variable | Sort-Object Name | Format-Table Name, Description -AutoSize -Wrap
\ No newline at end of file

demos/day1/4-array_results.ps1

+# Storing results in arrays
+$x = Get-Process
+
+# Create non-array
+$a = "Hello World"
+
+# Identifying Arrays
+$x -is [array]
+$a -is [array]
+
+# Find number of elements stored in array
+$x.count
\ No newline at end of file

demos/day1/5-create_arrays.ps1

+# Create new array
+$array = 1,2,3,4
+$array
+
+# Show second element
+$array[1]
+
+# Shortcut for sequential numbers
+$array1 = 1..4
+$array1
+
+# Polymorphic Arrays
+$array2 = "World", "hello",  5, 10, (Get-Date)
+$array2
+
+# Empty Array
+$array3 = @()
\ No newline at end of file

demos/day1/6-address_elements.ps1

+# Create Array
+$array = -5..10
+
+# Access second element
+$array[1]
+
+# Access last element
+$array[-1]
+$array[$array.Count-1]
+$array[$array.Length-1]
+
+# Access generated array not stored in a variable
+(-4..10)[4]
\ No newline at end of file

demos/day1/7-multiple_array_elements.ps1

+# Create array
+$list = Get-Process
+
+# Display only the 2nd, 5th, 9th, & 13th elements
+$list[1, 4, 8, 12]

demos/day1/8-jagged_arrays.ps1

+# Jagged Arrays
+
+$jagarray = "joe", "jim", "jan", (1, ('apple', 'pear'), 3), "jay"
+
+# Address first element
+$jagarray[0]
+
+# Address array at third element
+$jagarray[3]
+
+# Address first element in middle array
+$jagarray[3][1][0]

demos/day1/9-string_arrays.ps1

+# Multiply Strings
+'_' * 20
+'BOOM ' * 20
+
+# Create text array using '@()'
+@('BOOM') * 20
+
+# Create Array with 20 elements
+@(0) * 20
+
+# Shortcut 
+,0 * 20
+

demos/day2/1-help_alias.ps1

+# Finding cmdlets
+Help format*
+Help *content*
+Help write*
+Help about_*
+
+# List aliases
+Get-Alias
+Get-ChildItem  alias:
+
+# Create alias
+Set-alias gh Get-Help
\ No newline at end of file

demos/day2/10-the_rest.ps1

+# Using Get-Unique
+1,2,3,1,2,3,1,2,3,1,2,3,1,2,3 | Sort-Object | Get-Unique
+
+# Using Measure-Object
+Get-ChildItem | Measure-Object Length
+
+# Using Parameters with Measure-Object
+Get-ChildItem | Measure-Object Length -Average -Maximum -Minimum -Sum
+
+# Create test file and snapshot of directory
+'What is the answer to life, the universe, and everything?' > test.txt
+$before = Get-ChildItem
+
+# Modify test file and new snapshot
+'42' > test.txt
+$after = Get-ChildItem
+
+# Use Compare-Object to compare the before and after variables
+Compare-Object $before $after -Property Length, Name

demos/day2/11-add_properties.ps1

+# Create new object using New-Object
+$Mytruck = New-Object Object
+
+# Adding Properties Using Add-Member
+Add-Member -MemberType NoteProperty -Name Color -Value Red -InputObject $Mytruck
+
+# Adding using shortened parameter names
+Add-Member -Me NoteProperty -in $Mytruck -Na Make -Value Ford
+
+# Adding using positional parameters
+Add-Member -InputObject $Mytruck NoteProperty Model "F-150 Raptor"
+
+# Adding through a pipeline
+$Mytruck | Add-Member NoteProperty Cab SuperCrew
+
+# Accessing specific property
+$Mytruck.Make
+

demos/day2/12-add_methods.ps1

+# Adding a new method
+Add-Member -MemberType ScriptMethod -InputObject $Mytruck -Name Drive -Value { "Going on a roadtrip" }
+
+# Adding a method by parameter position
+Add-Member -InputObject $Mytruck ScriptMethod Accelerate { "Skinny pedal on the right" }
+
+# Adding a method through a pipeline
+$Mytruck | Add-Member ScriptMethod Park { "Finding a spot" }
+
+# Accessing a method
+$Mytruck.Park()
+$Mytruck.Drive()
\ No newline at end of file

demos/day2/13-comparison_operators.ps1

+# Equals
+2 -eq 2
+2 -eq 3
+1,2,3 -eq 2
+"abc" -eq "abc"
+"abc" -eq "abc", "def"
+"abc", "def" -eq "abc"
+
+# Not Equals 
+"abc" -ne "def"
+"abc" -ne "abc"
+"abc" -ne "abc", "def"
+"abc", "def" -ne "abc"
+
+# Greater Than
+8 -gt 6
+7, 8, 9 -gt 8
+
+# Less Than
+6 -lt 8
+7, 8, 9 -lt 8
+
+# Greater than or equal to
+6 -ge 6
+5, 6, 7 -ge 6
+
+# Less than or equal to
+6 -le 6
+5, 6, 7 -le 6
+
+# like
+"Inky" -like "*"
+"Blinky" -like "Bl?nky"
+"Pinky" -like "[L-Q]inky"
+"Clyde" -like "[ABC]lyde"
+
+# notlike
+"Inky" -notlike "*"
+"Blinky" -notlike "Bli?nky"
+"Pinky" -notlike "[A-F]inky"
+"Clyde" -notlike "[DEF]lyde"
+
+# match
+$text = "Your account username is ACE4495"
+$pattern = '([A-F]{3})(\d{4})'
+$text -match $pattern
+
+# contains
+$ghosts = 'Inky', 'Blinky', 'Pinky', 'Clyde'
+$ghosts -contains 'pinky'
\ No newline at end of file

demos/day2/14-where_object.ps1

+# Display only the services with the status of 'running'
+Get-Service | Where-Object{$_.Status -eq 'running'}
+
+# Show txt files with sizes greater than 100
+Get-ChildItem *.txt | Where-Object{$_.Length -gt 100}
+
+# Display all processes whose company name begins with 'micro'
+Get-Process | Where-Object {$_.Company -like 'micro*'} | Format-Table Name, Description, Company
+

demos/day2/15-if_conditions.ps1

+$x = 5
+# Example 1
+
+# Equal To
+if($x -eq 5) {
+    Write-Host "Condition is true - x is equal to 5" -ForegroundColor Blue
+}
+# Less Than
+if($x -lt 6) {
+    Write-Host "x is less than 6" -ForegroundColor Green
+}
+# Greater Than
+if($x -gt 4) {
+    Write-Host "X is greater than 4" -ForegroundColor Cyan
+}
+# Greater Than or Eqaul To
+if($x -ge 2) {
+    Write-Host "x is greater than or equal to 2" -ForegroundColor Yellow
+}
+# Less Than or Equal To
+if ($x -le 9) {
+    Write-Host "x is less than or equal to 9" -ForegroundColor Gray
+}
+# Not Equal
+if($x -ne 8) {
+    Write-Host "x is not equal to 8" -ForegroundColor Red
+}
+
+# Example 2 Case-insensitive comparisons
+if("ABC" -ieq "Abc") {
+    Write-Host "Example 1 - Condition satisfied" -ForegroundColor Green
+}
+else {
+    Write-Host "Example 1 - Condition NOT satisfied" -ForegroundColor Red
+}
+
+# Example 3 Case-Sensitive 
+
+if("ABC" -ceq "Abc") {
+    Write-Host "Example 1 - Condition satisfied" -ForegroundColor Green
+}
+else {
+    Write-Host "Example 1 - Condition NOT satisfied" -ForegroundColor Red
+}
+
+$ZeroWing = "All your base are belong to us"
+$var = "base"
+if ($ZeroWing -contains $var)
+{
+    $x = "The line is " + $true
+}
+else
+{
+    $x = "This is a lie and " + $false
+}
+$x
\ No newline at end of file

demos/day2/16-if_elseif_condition.ps1

+$x = 2
+
+if ($x -eq 5) {
+    Write-Host "Bob"
+}
+elseif ($x -eq 4) {
+    Write-Host "Sue"
+}
+elseif ($x -eq 2) {
+    "Tom"
+}
+elseif ($x -gt 1) {
+    "Mary"
+}
+else {
+    "Who am i?"
+}
+
+$num = (Get-Random -Minimum 0 -Maximum 10)
+
+if($num -lt 5) {
+    "$num is less than 5"
+}
+elseif($num -eq 5) {
+    "$num is exactly 5"
+}
+else {
+    "$num is greater than 5"
+}

demos/day2/17-switch.ps1

+
+# Example 1 Multiple values meet condition
+Switch(10)
+{
+    (1 + 9) {
+        "Congrats, you did adds right"
+    }
+    (1 + 10) {
+        "This be wrong"
+    }
+    (11 - 1) {
+        "Congrats, you did minus right"
+    }
+    (1 - 11) {
+        "Congrats, you did math wrong"
+    }
+}
+
+# Example 2 multiple values 
+$num = (Get-Random -Minimum 0 -Maximum 10)
+Switch($num) {
+    {$_ -le 3} { "Some number from 1 to 3" }
+    6 { "It is the number 6" }
+    {(($_ -ge 6) -and ($_ -le 9))} { "Some number from 7 to 9" }
+    {$_ -gt 2} { "It is greater than 2"}
+    {(($_ -ge 5) -and ($_ -le 8))} { "Some number from 5 to 8" }
+    {$_ -le 7} { "It is less than 7"}
+}
+
+# Example 3 using default
+$val = "Meg"
+Switch($val) {
+    Peter { "That's the father" }
+    Lois { "That's the mother" }
+    Stewie { "That's the youngest child" }
+    Chris { "That's the oldest child" }
+    default { "Nobody cares about you $val" }
+}
\ No newline at end of file