echo "Derp" > ./derp.txt Permission Denied

Mount point was mounted using sudo, will need sudo to echo into that file

sudo echo "Derp" > ./derp.txt

"sudo system-analyze critical-chain" Command not found.

Should be systemd-analyze?

hello friend you script runs good, but there is a really simple typo on line 77 you had space after the equal sign of (of) output file that's didn't to execute the command unless I remove the space. otherwise your script is good

Permission issue when creating service .target files.

I would try creating the files in your local home directory first, then copying them to the /etc/systemd/system directory. Thats how I did it in my script.
And does > vs >> make a difference here?

error
line 100 sudo mount ./32.MB.img /mnt/tmp
correction
you need to take out period (sudo mount ./32MB.img /mnt/tmp)

On line 100 you have a a error because you have period between 32 and MB that why it has a error.