powershellメモ

add $PATH temporary

$Env:Path += ";C:¥hoge¥fuga¥"

service

Get-Service | Format-Table -AutoSize

regexp

match

$cont = (Get-Content [file])
if ($cont -match '^#endif') {echo "fuga"}

replace

$cont = (Get-Content [file])
$ptn = '^#endif.*'
$replace = ''
$conv = ($cont -replace $ptn, $replace)

cat a.txt >> hoge.txt

Get-Content a.txt | Add-Contents hoge.txt

Read JSON

Get-Content $SENSU_CLIENT_CONF -Encoding UTF8 -Raw | ConvertFrom-Json

Without -Raw CAN NOT parse json contains NL new-line.

Use Row-Socket(TCP)

Virus scan treat nc.exe as a backdoor.
Windows built in telnet not support non intaractive mode, powershell.

General modules

Write myself

Send only ...

$msg = '{"name": "hogefuga"}'

$socket = New-Object System.Net.Sockets.TcpClient("localhost", 3030)
$stream = $socket.GetStream()
$writer = New-Object System.IO.StreamWriter $stream
$writer.Write($msg)
$writer.Flush()

Start-Sleep -m 100

$writer.Close()
$stream.Close()

Read bellow and more study hard!

Hot-to expand archive-files

It support not only zip but also 7z and tar.gz...

1. Install Pscx
2. use Expand-Archive cmdlet

Pscx

wget http://pscx.codeplex.com/downloads/get/923562 -Outfile Pscx-3.2.0.msi
Start-Process .\Pscx-3.2.0.msi /quiet -Wait

Instll aws tools

wget http://sdk-for-net.amazonwebservices.com/latest/AWSToolsAndSDKForNet.msi -Outfile AWSToolsAndSDKForNet.msi
Start-Process .\AWSToolsAndSDKForNet.msi /quiet -Wait

comparison ops

https://technet.microsoft.com/en-us/library/hh847759.aspx
-eq , -ne etc...

By default, all comparison operators are case-insensitive. To make a
comparison operator case-sensitive, precede the operator name with a "c".

PS C:\Users\test> "hello" -eq "Hello"
True

PS C:\Users\test> "hello" -ceq "Hello"
False

File IO

Output UTF-8 without BOM

$MyFile = Get-Content $MyPath
$Utf8NoBomEncoding = New-Object System.Text.UTF8Encoding($False)
[System.IO.File]::WriteAllLines($MyPath, $MyFile, $Utf8NoBomEncoding)

task scheduler

This is traditional task scheduler, not powershell taskjob.

run powershell script

You should NOT set hogehoge.ps1 at Program/Script. When you set Powershell script directory, it means notepad.exe hogehoge.ps1...

Program/Script: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
Args: -file hogehoge.ps1

runas ..

2 ways

1. Set System user.
2. Check Run with higest privileges

実践メモ

limit event log capacity

概念

コマンドの戻り = stringという考えは誤り
なんでもかんでもオブジェクト

pwdを変数に取りたい

PS C:\Users\Administrator> Get-Location

Path                                                                                                                                
----                                                                                                                                
C:\Users\Administrator 
                                                                                                                                                                                                                          

PS C:\Users\Administrator> $cp = Get-Location

PS C:\Users\Administrator> $cp

Path                                                                                                                          
----                                                                                                                          
C:\Users\Administrator   

PS C:\Users\Administrator> $cp.GetType()

IsPublic IsSerial Name                                     BaseType                                                           
-------- -------- ----                                     --------                                                           
True     False    PathInfo                                 System.Object  

PS C:\Users\Administrator> Get-Location | Get-Member


   TypeName: System.Management.Automation.PathInfo

Name         MemberType Definition                                               
----         ---------- ----------                                               
Equals       Method     bool Equals(System.Object obj)                           
GetHashCode  Method     int GetHashCode()                                        
GetType      Method     type GetType()                                           
ToString     Method     string ToString()                                        
Drive        Property   System.Management.Automation.PSDriveInfo Drive {get;}    
Path         Property   string Path {get;}                                       
Provider     Property   System.Management.Automation.ProviderInfo Provider {get;}
ProviderPath Property   string ProviderPath {get;}  

PS C:\Users\Administrator> $cp.Path
C:\Users\Administrator

PS C:\Users\Administrator> (Get-Location).ToString()
C:\Users\Administrator

覚えとくといい

Get-Member まんま、メンバ一覧
<オブジェクト>.GetType() 型確認
<オブジェクト>.ToString() 言わずもがな
[String]<オブジェクト> キャスト(ちゃんと動くんかな？)