How do I enable colours by default for common utilites in PowerShell on (Gentoo) Linux?

Question

I'm currently running Gentoo Linux and have installed PowerShell (app-shells/pwsh-bin) as I am a contrarian.

That being said, I am unable to obtain colour by default when running certain commands. Take ls or grep. When running ls or grep in a normal shell (e.g. bash) I will get colourful output by default. When running ls or grep in PowerShell, I must manually call these two commands with ls --color or grep --color to obtain colour. That being said, commands such as emerge do have colour by default in PowerShell (though emerge doesn't work, which is another issue).

I was wondering what I have to do to ensure that these commands have colour. Perhaps PowerShell doesn't use the default utilities and defines ls as an alias for its own command. I don't know how to use this information to solve my problem, though.

edit: The provided answer does not really solve my problem. While I now have colour when running ls, I do not have colour when running grep. Additionally, I get plenty of errors with the provided profile along the lines of:

Set-Alias: /home/jj/.config/powershell/Microsoft.PowerShell_profile.ps1:2 Line | 2 | set-alias cd set-location | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | The AllScope option cannot be removed from the alias 'cd'.

Answer 1

The ls and grep PowerShell uses are the same binaries other shells use. In my Bunsenlabs Berylllium (Deb 11) these are /usr/bin/ls and /usr/bin/grep. Colorization is defined with aliases in .bashrc.

alias grep='grep --color=auto'
alias ls='ls --color=auto'

Aliases defined in .bashrc etc. don't pass on to PS -session. However PS has $profile -files (see Microsoft) "to customize your environment and to add session-specific elements". To find the profile just type $profile in the shell. In my system the default is ~/.config/powershell/Microsoft.PowerShell_profile.ps1, but this file didn't exist after installation. The MS link has instructions how to create one, which I didn't follow - I simply created the directory and wrote the file.

After researching the subject looks like the easiest way is aliasing the commands in $profile, combined with defining functions. I ended up with this as my $profile:

if ($host.Name -eq 'ConsoleHost')
{
    function ls_col { & '/usr/bin/ls' --color=always $args }
    Set-Alias -name ls -Value ls_col -Option AllScope
    function grep_col { & '/usr/bin/grep' --color=always $args }
    Set-Alias -name grep -Value grep_col -Option Allscope
}

... and ls and grep are colored the same way as in my Bash-sessions.

Allscope-option is explained here.

Note - this is just quick n' dirty testing, not thorough and exhaustive how-to. The links should help to take this further. And more knowledgeable people are likely to correct me :-)