Windows PowerShell Cookbook: Difference between revisions
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== | [[Category:Powershell]] [[Category:Windows]] | ||
Download content from the web | == Fetching remote content == | ||
=== Download content from the web === | |||
This will print out the markup from the index page (which could then be piped through additional commands): | |||
<syntaxhighlight lang="powershell"> | <syntaxhighlight lang="powershell"> | ||
(new-object Net.WebClient).DownloadString("http://damienjay.com/") | > (new-object Net.WebClient).DownloadString("http://damienjay.com/") | ||
</syntaxhighlight> | </syntaxhighlight> | ||
[[ | |||
== Grep/Searching the content of files == | |||
=== Files in a single directory === | |||
<syntaxhighlight lang="powershell"> | |||
> select-string .\*.* -pattern "\my_regexp\" | |||
</syntaxhighlight> | |||
=== Recursive search === | |||
<syntaxhighlight lang="powershell"> | |||
> gci path\to\search\root\ -rec | select-string -pattern "\my_regexp\" | |||
</syntaxhighlight> | |||
=== Recursive search filtered by file type === | |||
<syntaxhighlight lang="powershell"> | |||
> Get-ChildItem path\to\search\root\ -include *.txt -rec | select-string -pattern "\my_regexp\" | |||
> # or, using aliases for the commands and not using "-include" ... | |||
> gci path\to\search\root\ *.txt -r | sls -pattern "\my_regexp\" | |||
</syntaxhighlight> | |||
== List directory contents == | |||
[http://technet.microsoft.com/en-us/library/ee692796.aspx Fun Things You Can Do With the Get-ChildItem Cmdlet] (Microsoft TechNet) | |||
<syntaxhighlight lang="powershell"> | |||
> Get-ChildItem .\ | |||
> # or... | |||
> gci .\ | |||
> # or... | |||
> gci # for the current directory | |||
</syntaxhighlight> | |||
=== Limit listing to file names === | |||
<syntaxhighlight lang="powershell"> | |||
> gci path\to\directory | Select-Object Name | |||
> # or... | |||
> Get-ChildItem path\to\directory -name | |||
</syntaxhighlight> | |||
=== Recursive listing === | |||
<syntaxhighlight lang="powershell"> | |||
> gci -recursive | |||
> # or... | |||
> gci -rec | |||
</syntaxhighlight> | |||
== Environment variables == | |||
Displaying, creating, and modifying environment variables using Powershell CLI.<ref>[https://technet.microsoft.com/en-us/library/ff730964.aspx Creating and Modifying Environment Variables] - Microsoft TechNet</ref> | |||
See also [[Powershell Environment Configuration]]. | |||
=== List all environment variables === | |||
<syntaxhighlight lang="powershell"> | |||
> Get-ChildItem Env: | |||
> # (or using gci alias...) | |||
> gci env: | |||
</syntaxhighlight> | |||
=== Display value of a single environment variable === | |||
`$Env:` followed by the variable name, e.g.: | |||
<syntaxhighlight lang="powershell"> | |||
> $Env:OS | |||
</syntaxhighlight> | |||
=== Creating and modifying environment variables === | |||
==== Creating a process-level environment variable ==== | |||
<syntaxhighlight lang="powershell"> | |||
> $env:TestVariable = "This is the test variable value." | |||
</syntaxhighlight> | |||
==== Creating a permanent environment variable ==== | |||
<syntaxhighlight lang="powershell"> | |||
> [Environment]::SetEnvironmentVariable("TestVariable", "Test value.", "User") | |||
</syntaxhighlight> | |||
<div class="alert alert-warning">N.B. It's necessary to create a new Powershell instance to refer to new environment variable values.</div> | |||
==== Deleting an environment variable ==== | |||
<syntaxhighlight lang="powershell"> | |||
> Remove-Item Env:TestVariable | |||
> # (or...) | |||
> [Environment]::SetEnvironmentVariable("TestVariable", $null, "User") | |||
</syntaxhighlight> | |||
== Notes == | |||
<references /> | |||
Latest revision as of 19:14, 30 November 2015
Fetching remote content[edit]
Download content from the web[edit]
This will print out the markup from the index page (which could then be piped through additional commands):
> (new-object Net.WebClient).DownloadString("http://damienjay.com/")
Grep/Searching the content of files[edit]
Files in a single directory[edit]
> select-string .\*.* -pattern "\my_regexp\"
Recursive search[edit]
> gci path\to\search\root\ -rec | select-string -pattern "\my_regexp\"
Recursive search filtered by file type[edit]
> Get-ChildItem path\to\search\root\ -include *.txt -rec | select-string -pattern "\my_regexp\" > # or, using aliases for the commands and not using "-include" ... > gci path\to\search\root\ *.txt -r | sls -pattern "\my_regexp\"
List directory contents[edit]
Fun Things You Can Do With the Get-ChildItem Cmdlet (Microsoft TechNet)
> Get-ChildItem .\ > # or... > gci .\ > # or... > gci # for the current directory
Limit listing to file names[edit]
> gci path\to\directory | Select-Object Name > # or... > Get-ChildItem path\to\directory -name
Recursive listing[edit]
> gci -recursive > # or... > gci -rec
Environment variables[edit]
Displaying, creating, and modifying environment variables using Powershell CLI.[1]
See also Powershell Environment Configuration.
List all environment variables[edit]
> Get-ChildItem Env: > # (or using gci alias...) > gci env:
Display value of a single environment variable[edit]
$Env: followed by the variable name, e.g.:
> $Env:OS
Creating and modifying environment variables[edit]
Creating a process-level environment variable[edit]
> $env:TestVariable = "This is the test variable value."
Creating a permanent environment variable[edit]
> [Environment]::SetEnvironmentVariable("TestVariable", "Test value.", "User")
N.B. It's necessary to create a new Powershell instance to refer to new environment variable values.
Deleting an environment variable[edit]
> Remove-Item Env:TestVariable
> # (or...)
> [Environment]::SetEnvironmentVariable("TestVariable", $null, "User")
Notes[edit]
- ↑ Creating and Modifying Environment Variables - Microsoft TechNet