Sort

Sorts by the "CPU" property:

Get-Process | Sort-Object -Property CPU

Sorts by the "CPU" property, and if two are the same, it sorts by the ID, in descending order:

Get-Process | Sort-Object CPU,ID -desc

Sort files in current dir by creation time:

gci | Select Name,CreationTime | Sort-Object CreationTime -desc

Sorts the lines in a text file and outputs to another file:

sort C:\path\to\file.txt > C:\path\to\sortedfile.txt 

Sorts the content of a file alphabetically and saves the sorted content to a new file:

type C:\path\to\file.txt | sort > C:\path\to\sortedfile.txt