WSL bash powershell alias

linux-powershell_alias.sh

__WINSYS32=/mnt/c/Windows/system32
__POWERSHELL=${__WINSYS32}/WindowsPowerShell/v1.0/powershell.exe

powershell() {
    if [ -z "${__OEMCP}" ] ; then
        __OEMCP=$(${__WINSYS32}/reg.exe query "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Nls\\CodePage" /v OEMCP 2>&1 | sed -n 3p | tr -d '\015' | grep -o '[[:digit:]]*')
    fi
    $__WINSYS32/chcp.com $__OEMCP >/dev/null
    $__POWERSHELL "$@" | tr -d '\015'
    $__WINSYS32/chcp.com 65001 >/dev/null
}