This is Ubuntu 20.04 running on Windows 10 in WSL.
‘gcc’ option -Os does not work. Optimize for size.
shell ‘sleep’ command fails with “cannot read realtime clock:”. Messes up
shell scripts with delays.
sudo cat ABC >> DEF Fails with “perrmisssion denied” Used to work to append
ABC to the end of DEF.
ABC and DEF are owned by root and group root.