How to append to a file with PowerShell | Operating systems, scripting, PowerShell and security

PowerShell

"hola" | Out-File fichero.txt
"adios" | Out-File fichero.txt -append
cat fichero.txt

"hola" | Out-File fichero.txt

"adios" | Out-File fichero.txt -append

cat fichero.txt

How to append to a file with PowerShell (PowerShell)