scrap-cygwin.txt

# ATTENTION: NOTICE: See .github/workflows/build.yml , _lib/kit/install/cloud/zSpecial/msw/build_ubcp/build_ubcp_powershell.ps1 .

# Symbolic links are correctly packaged *within* Cygwin (as with 'cygwinOnly' packages), and can be extracted correctly *within* Cygwin. MSW package compression/decompression software (eg. 'tar' from PowerShell, MSW 'zip', 7zip) may NOT commonly support symlinks, causing subtle, severe, deficiencies. Also, Cygwin has a very interesting root filesystem of unusual relative symbolic links by default.

# CAUTION: DANGER: Many workarounds and mitigations for Cygwin/MSW symbolic link issues are subtly, severely, necessary . Build and test 'ubcp' packages carefully to avoid and detect such deficiencies, especially with regard to avoiding any functionality that might change in future versions of MSW and third-party software.

-

# Rough description, not exact commands.

# Install git for windows . Also, nmap, qalculate, may be useful.

git clone --recursive --depth 1 <ubiquitousBashURL>

cd ./_local/ubcp
./ubcp-cygwin-portable-installer
cp ubcp_rename-to-enable.cmd ubcp.cmd

# Use _bash.bat to open a Cygwin/MSW terminal, as this seems not to close.


# Run '_setupUbiquitous' in some way.


# '_bin' with no '.bat' extension seems to be usable in CMD shell after 'setupUbiquitous'

_bin _mitigate-ubcp
_bin _package-cygwinOnly
_bin _setup_ubcp


# Mitigate is very slow, approximately 7 hours.


# Shortcut '_bash.bat' is installed by '_setupUbiquitous' regardless of whether 'core' installation is available. Request should be issued that user not attempt to use such resources until '_setup_ubcp' complete .






-

cd C:
cd \core\infrastructure
mkdir lean
mkdir lean\_local
cd \core\infrastructure\lean\_local
copy X:\_local\ubcp\ubcp-cygwin-portable-installer.cmd

REM tskill ssh-pageant
REM remove any existing ' C:\core\infrastructure\ubcp '
REM run ' ubcp-cygwin-portable-installer.cmd ' multiple times to ensure completion
REM Installation may complain about 'awk' and such not found although these resources may nevertheless be installed correctly .

REM replace files under 'cygwin' with files under 'overlay/cygwin'

REM copy missing directories/files from 'X:\' to ' C:\core\infrastructure\lean ' and ' C:\core\infrastructure\lean\_local\ubcp ' .




REM may need to run these commands from local disk with no spaces (ie. ' C:\core\infrastructure\lean ' instead of network mount
REM will need to copy 'ubcp' dir to '_local/ubcp'
REM best done from a '_bash.bat' shell due to undesirable clearing of screen after command exit from 'cmd'

./lean.sh _mitigate-ubcp
./lean.sh _package-cygwinOnly


REM copy resulting 'ubcp' installation to ' C:\core\infrastructure\ubcp ' .
_bin _setup_ubcp


_bin _setupUbiquitous_noNet










_


uname -a | grep -i cygwin > /dev/null 2>&1

./firefox.exe $(cygpath -w "/cygdrive/x/license.txt")

#https://stackoverflow.com/questions/31192010/cygwin-binary-exec-format-error
export ARCH = CYGNUS

#https://superuser.com/questions/304541/how-to-install-new-packages-on-cygwin


#https://stackoverflow.com/questions/4090301/root-user-sudo-equivalent-in-cygwin
cygstart --action=runas "$@"

#https://codingwithspike.wordpress.com/2012/08/02/making-a-truly-portable-cygwin-install-working-around-drive-letter-and-file-permission-issues/


#https://en.wikipedia.org/wiki/Shebang_(Unix)
'python3 -c will be passed as one argument to /usr/bin/env, rather than two arguments. Cygwin also behaves this way.'


#https://stackoverflow.com/questions/6811435/why-does-cygwin-execute-shell-commands-very-slowly
#https://www.puttygen.com/windows-terminal-emulators
# "conemu" does not apparently show a performance benefit with ... time for i in {1..1000} ; do echo "Hello" ; done
# "mintty" does not apparently show any performance benefit with './lean.sh _benchmark_page'
time for i in {1..1000} ; do echo "Hello" ; done
...
Hello
Hello

real    0m0.584s
user    0m0.031s
sys     0m0.000s







# "conemu" fails here (lean.sh)
[[ ! -e "$scriptAbsoluteLocation" ]] && _messagePlain_bad 'missing: scriptAbsoluteLocation= '"$scriptAbsoluteLocation" | _user_log-ub && exit 1
[[ "$sessionid" == "" ]] && _messagePlain_bad 'missing: sessionid' | _user_log-ub && exit 1



#https://unix.stackexchange.com/questions/482725/shell-is-it-possible-to-delay-a-command-without-using-sleep
time for i in {1..10} ; do true ; coproc read -t 0.001 > /dev/null 2>&1 && wait "$!" > /dev/null 2>&1 || true > /dev/null 2>&1 ; done