delete all lines in vi vim

To delete all lines in vim, use this command:

:1,$d
This vim “delete all lines” command can be read like this:

The : character starts vim’s “last line mode.”
The 1 means, “starting at line 1”
The ,$ means, “until the end of the file”
The d means, “delete”

tail -f

tail -f file.log = get-content "file.log" -wait
Linux = Windows PowerShell