Difference between revisions of "PowerShell/Core7"
| Line 20: | Line 20: | ||
Any commands included in the profile file will be executed during terminal/shell initialization. | Any commands included in the profile file will be executed during terminal/shell initialization. | ||
{{Note|This is not working while switching the shell and is executed on the new terminal initiation}} | {{Note|This is not working while switching the shell and is executed on the new terminal initiation}} | ||
< | <syntaxhighlightjsjs lang="powershell"> | ||
> $profile | > $profile | ||
/home/piotr/.config/powershell/Microsoft.VSCode_profile.ps1 | /home/piotr/.config/powershell/Microsoft.VSCode_profile.ps1 | ||
</ | </syntaxhighlightjsjs> | ||
= Pipeline = | = Pipeline = | ||
Everything in PS is '''an object''', although we use '|' piping this is not the same concept as STDIN and STDOUT in Linux. | Everything in PS is '''an object''', although we use '|' piping this is not the same concept as STDIN and STDOUT in Linux. | ||
< | <syntaxhighlightjs lang="powershell"> | ||
PS> Get-Process -Name whoopsie | Get-Member -Name CPU,Company | PS> Get-Process -Name whoopsie | Get-Member -Name CPU,Company | ||
PS> Get-Process -Name whoopsie | Select-Object -Property name,CPU | PS> Get-Process -Name whoopsie | Select-Object -Property name,CPU | ||
| Line 46: | Line 46: | ||
Web Content 5085.47 | Web Content 5085.47 | ||
Xorg 3593.26 | Xorg 3593.26 | ||
</ | </syntaxhighlightjs> | ||
= Variables = | = Variables = | ||
These are objects. | These are objects. | ||
< | <syntaxhighlightjs lang="powershell"> | ||
S /home/piotr> Get-Help *variable* | S /home/piotr> Get-Help *variable* | ||
Name Category Module Synopsis | Name Category Module Synopsis | ||
| Line 59: | Line 59: | ||
Remove-Variable Cmdlet Microsoft.PowerShell.Uti… … | Remove-Variable Cmdlet Microsoft.PowerShell.Uti… … | ||
Set-Variable Cmdlet Microsoft.PowerShell.Uti… … | Set-Variable Cmdlet Microsoft.PowerShell.Uti… … | ||
</ | </syntaxhighlightjs> | ||
= if = | = if = | ||
< | <syntaxhighlightjs lang="powershell"> | ||
if ($var -gt 5) { | if ($var -gt 5) { | ||
write-host "true" | write-host "true" | ||
| Line 68: | Line 68: | ||
write host "false" | write host "false" | ||
} | } | ||
</ | </syntaxhighlightjs> | ||
= do/while = | = do/while = | ||
< | <syntaxhighlightjs lang="powershell"> | ||
Do { | Do { | ||
$number = $number + 1 | $number = $number + 1 | ||
write-host "current nuber is: $number" | write-host "current nuber is: $number" | ||
} while ($number -lt 10) | } while ($number -lt 10) | ||
</ | </syntaxhighlightjs> | ||
= for each = | = for each = | ||
< | <syntaxhighlightjs lang="powershell"> | ||
$names = "Bob","Jamse","Tom" | $names = "Bob","Jamse","Tom" | ||
$collection = $names | $collection = $names | ||
| Line 88: | Line 88: | ||
} | } | ||
Write-Host "$count" | Write-Host "$count" | ||
</ | </syntaxhighlightjs> | ||
Revision as of 19:07, 2 July 2020
Installing PowerShell on Linux
Note: Ubuntu 20.04 is an LTS release. PowerShell does not currently support this version. Support for this version is being considered for the PowerShell 7.1 release. PowerShell can only support the distributions that are supported by .NET. See the Core release notes for a list of supported distributions.
snap install powershell --classic powershell 7.0.2 from Microsoft PowerShell✓ installed $ powershell # run or use 'pwsh' to start it up PowerShell 7.0.2 Copyright (c) Microsoft Corporation. All rights reserved. https://aka.ms/powershell Type 'help' to get help. PS /home/piotr>
Concepts
- module - set of related Windows PowerShell functionalities grouped together as convenient uni
Environment profiles
Any commands included in the profile file will be executed during terminal/shell initialization. Note: This is not working while switching the shell and is executed on the new terminal initiation <syntaxhighlightjsjs lang="powershell"> > $profile /home/piotr/.config/powershell/Microsoft.VSCode_profile.ps1 </syntaxhighlightjsjs>
Pipeline
Everything in PS is an object, although we use '|' piping this is not the same concept as STDIN and STDOUT in Linux. <syntaxhighlightjs lang="powershell"> PS> Get-Process -Name whoopsie | Get-Member -Name CPU,Company PS> Get-Process -Name whoopsie | Select-Object -Property name,CPU
Name CPU
---
whoopsie 0.24
- When assigning to a variable we assign an object not just a string
$variable = Get-Process S> $variable | Select-Object -Property name,CPU | Sort-Object -Descending CPU | Select-Object -First 5
Name CPU
---
gnome-shell 11796.69 firefox 11012.4599999 Web Content 7573.22 Web Content 5085.47 Xorg 3593.26 </syntaxhighlightjs>
Variables
These are objects. <syntaxhighlightjs lang="powershell"> S /home/piotr> Get-Help *variable* Name Category Module Synopsis
-------- ------ --------
Clear-Variable Cmdlet Microsoft.PowerShell.Uti… … Get-Variable Cmdlet Microsoft.PowerShell.Uti… … New-Variable Cmdlet Microsoft.PowerShell.Uti… … Remove-Variable Cmdlet Microsoft.PowerShell.Uti… … Set-Variable Cmdlet Microsoft.PowerShell.Uti… … </syntaxhighlightjs>
if
<syntaxhighlightjs lang="powershell"> if ($var -gt 5) {
write-host "true"
} elseif {
write host "false"
} </syntaxhighlightjs>
do/while
<syntaxhighlightjs lang="powershell"> Do {
$number = $number + 1 write-host "current nuber is: $number"
} while ($number -lt 10) </syntaxhighlightjs>
for each
<syntaxhighlightjs lang="powershell"> $names = "Bob","Jamse","Tom" $collection = $names $count = 0 foreach ($item in $collection) {
$count += 1 Write-Host "$item"
} Write-Host "$count" </syntaxhighlightjs>