PowerShell aliases (alias)

In the previous section, we described how to retrieve all the available commands in the current shell and PowerShell, and for the specified command to view their syntax information, you can get help information for the specified command, including getting the online Help topic, detailed content timestamp here.

In this section, you mainly describe the alias for PowerShell, which mainly includes the following.

1. Familiarize yourself with the common aliases.

2. Specification of standard aliases and creation of new aliases.

3. The compatibility alias in PowerShell.

4. Summarize
   

familiar with common aliases

An alias, a popular point, is another name, and the alias associates the command entered with another command. For example, "Mimi" is the nickname for "Cat". By using aliases, PowerShell allows users to reference commands using alternate commands. Furthermore, aliases enable users with other shell experience to reuse these commands in PowerShell to perform similar operations.

For example, PowerShell has an intrinsic function called clear-host , which is used to clear the Output window. If you enter the CLS or the clear command at the command prompt, PowerShell interprets this command as an alias for the Clear-host function and allows the Clear-host function.

The alias feature of PowerShell is very helpful for developers to learn about PowerShell, and most cmd.exe or UNIX users have a large list of commands that they remember by name. Their formal similarity is enough to allow developers to use these commands directly to complete their work without first remembering the PowerShell command name.

The following is a short list of common Cmd.exe and UNIX commands that you can use in PowerShell.

Cat	Dir	Mount	Rm	Cd	Echo	Move	RmDir
ChDir	Erase	popd	Sleep	Clear	H	Ps	Sort
Cls	History	pushd	Tee	Copy	Kill	Pwd	Type
Del	Lp	R	Write	Diff	Ls	ren

If you frequently use one of these commands and want to know its true name in PowerShell, you can pass the Get-alias command.

ps c:\documents and settings\administrator> get-alias clscommandtype      Name                                                   Definition-----------     ----                                                   ----------alias           cls                                                    clear-host

As for aliases, it is important to note that if you are working with PowerShell scripts or code snippets from other sources, or if you want to define your own aliases, the early information about the alias is significant. You should also be aware that each developer can define his or her own alias, so in team collaboration scripting, you should try to avoid using aliases.

Specification for standard aliases

The aliases mentioned above are designed to achieve compatibility with other shell command names, but PowerShell's built-in aliases are often designed for brevity and simplicity, and these short commands are easy to enter, but they cannot be interpreted correctly without understanding their meaning.

PowerShell balances clarity and brevity by providing a set of standard aliases based on shorthand names for commonly used verbs and nouns. In the core aliases of a common set of cmdlets, you can interpret these commands by simply knowing the shorthand names. For example, in the standard alias, the verb Get abbreviation is g, the verb Set abbreviation is s, the noun Item abbreviation is i, the noun location abbreviation is l, and the noun Command abbreviation is cm. Please refer to the examples in the table below.

PS (Powershell) command	PS (Powershell) aliases
Get-Item	Gi
Set-Item	Si
Get-Location	Gl
Set-Location	Sl
Get-Command	Gcm

Create a new Alias

The PowerShell command Set-alias cmdlet can create aliases, such as the following aliases can be created.

Set-alias-name gi-value get-itemset-alias-name si-value set-itemset-alias-name gl-value get-locationset-alias-name Sl-value set-locationset-alias-name Gcm-value Get-command

Internally, this type of command is used when PowerShell is started. It is important to note that the PowerShell built-in aliases (5 aliases above are built-in aliases) are read-only or commonplace, meaning that the PowerShell built-in aliases are not modifiable .

Compatibility aliases in PowerShell

PowerShell has several conversion aliases that allow UNIX and CMD developers to use familiar command names in PowerShell. The following table lists the most commonly used aliases and the PowerShell commands behind the aliases and the standard PowerShell aliases (if any). As mentioned earlier, you can use the Get-alias cmdlet to find the PowerShell command corresponding to the alias, such as the Get-alias CLS .

CMD command	UNIX Commands	PS (Powershell) command	PS (Powershell) aliases
Dir	Ls	Get-childitem	Gci
Cls	Clear	Clear-host (function)	Not available
Del,erase,rmdir	Rm	Remove-item	Ri
Copy	Cp	Copy-item	Ci
Move	Mv	Move-item	Mi
Rename	Mv	Rename-item	Rni
Type	Cat	Get-content	Gc
Cd	Cd	Set-location	Sl
Md	Mkdir	New-item	Ni
Not available	pushd	Push-location	Not available
Not available	popd	Pop-location	Not available

Summarize

By learning this section, you should be familiar with the following content

1. The aliases that are common in PowerShell and the actual PowerShell commands are viewed through aliases.

2. The alias naming specification for PowerShell and creating a new alias (the PowerShell built-in alias cannot be changed).

3. Know the compatibility aliases in PowerShell

This article from "Flower Blossom Fall" blog, declined reprint!

PowerShell aliases (alias)