Linux reboot to Windows and Windows reboot to Linux scripts

.zshrc

# Update the GUID's for Linux and Windows
# i.e. replace gnulinux-simple-XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXX and efi-XXXX-XXXX with your actual GUID's
# Add this alias to either .zshrc, .bashrc, .profile etc. Don't forget to source ~/.zshrc etc. or restart
alias windows="sudo sed -i -e '/saved_entry=gnulinux-simple-XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXX/c\saved_entry=efi-XXXX-XXXX' /boot/grub/grubenv && sudo reboot" # set menuentry to Windows 10

restart-into-manjaro.bat

@echo off
:: Found this solution after I created my own but, didn't get it to work. Leaving here for reference:
:: https://gist.github.com/erm3nda/108ee48cf3f9f2ab6db9e54fe2d6ffdb

:: Create a desktop shortcut and point it to this script after editing the GUID's below

:: This program needs the following 7 (or 9) things to work:
:: 1) The following GRUB setup to remember last menuentry choice: https://askubuntu.com/a/149572/403296
:: 2) sed (pick one):
::      - choco install sed - https://community.chocolatey.org/packages/sed
::      - http://sourceforge.net/projects/gnuwin32/files//sed/4.2.1/sed-4.2.1-setup.exe/download - http://gnuwin32.sourceforge.net/packages/sed.htm
:: 3) dos2unix (pick one):
::      - dos2unix via CygUtils - http://downloads.sourceforge.net/gnuwin32/cygutils-1.3.2-setup.exe :: http://gnuwin32.sourceforge.net/packages/cygutils.htm
::      - dos2unix - https://sourceforge.net/projects/dos2unix/
:: 4) LinuxFS for Windows by Paragon - https://dl.paragon-software.com/demo/linuxwin_trial.msi :: Trial just slow down speed, is OK for us :: https://www.paragon-software.com/home/linuxfs-windows/
::      - Aside, one could move /boot to its own FAT32 or NTFS partion and rework fstab etc, if you don't want to rely on LinuxFS for ext4 support. 
::      - Once working remove extmounter and update drive letters and paths accordingly etc. Google how to do this for your particular OS/PC
:: 5) Make sure sed, dos2unix and extmounter are in the PATH Env Var by running them in CMD or PowerShell. 
::      - note: if installing sed via chocolatey, it should already be set via its shimming system, at least in theory.
:: 6) Update the following variable values:
::      - Replace with your own Windows and Linux menuentry id's respectivly; id's found in /boot/grub/grub.cfg or custom.cfg etc. or in /boot/grub/grubenv saved_entry var after booting into each OS.
SET windows=efi-XXXX-XXXX
SET linux=gnulinux-simple-XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXX
:: 7) Update disk# & volume# with your own. Use LinuxFS for Windows (or similiar) to find disk# and volume# (partition.)
::      - Choose a drive letter (capitalized) that's not already in use or commonly used.
SET disk=disk2
SET volume=volume3
SET driveletter=Z

:: 8) May need full path to extmounter, if not in PATH System Variable i.e. "C:\Program Files (x86)\Paragon Software\LinuxFS for Windows\extmounter"
extmounter /mount %disk% %volume% %driveletter%:

:CheckForFile
IF EXIST "%driveletter%:/boot/grub/grubenv" GOTO FoundIt
GOTO CheckForFile

:FoundIt
:: sed find and replace - add source link
sed -i -e "/saved_entry=%windows%/c\saved_entry=%linux%" %driveletter%:/boot/grub/grubenv
:: sed truncate grubenv to required 1024kb - https://unix.stackexchange.com/a/459528/34644
sed -Ez -i -- "s/^(.{1024}).*/\1/" %driveletter%:/boot/grub/grubenv
:: dos2unix (d2u) to change line breaks from Windows CR+LF to Unix LF otherwise we get "error: Environment block is too small"
:: fix here: https://forum.manjaro.org/t/environment-block-is-too-small/42139
:: To test d2u is working use git-bash and find, see first update here - https://stackoverflow.com/a/46548284/585191
:: Summary CR+LF vs CR vs LF - https://stackoverflow.com/a/39259747/585191
dos2unix %driveletter%:/boot/grub/grubenv
GOTO UnMount

:UnMount
:: 9) May need full path to extmounter, if not in PATH System Variable i.e. "C:\Program Files (x86)\Paragon Software\LinuxFS for Windows\extmounter"
extmounter /umount %disk% %volume%
echo press enter to reboot
pause
shutdown -r -t 00