Une métaphore amusante consiste à considérer Git comme un utilitaire de gestion des chronologies. 


== Where am I ? Bash hint ! ==

{{{
parse_git_branch() {
     git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ (\1)/'
}
export PS1="\u@\h \[\033[32m\]\w\[\033[33m\]\$(parse_git_branch)\[\033[00m\] $ "
}}}

== Useful links ==
https://git-scm.com/docs/git-commit [[BR]]
https://www.atlassian.com/fr/git/tutorials/undoing-changes
https://githowto.com/getting_old_versions


== Useful commands == 

git-restore
{{{
git restore deleted_file.F90 Restore working tree files
git restore --source MY_BRANCH~2 file_before_last_2_commit.F90
https://git-scm.com/docs/git-restore
}}}

git-branch
{{{
git branch -D MY_BRANCH - Delete locally
Deleted branch debug_rk3 (was 63a26b2).
git checkout -b debug_rk3 63a26b2 - Retrieve the branch deleted
}}}

git-reset
{{{
git reset #sha - come back to former state of the branch useful when you want to cancel a commit
}}}

git-checkout ???
{{{
git checkout MY_BRANCH - Switch branches [deprecated]
git checkout old_commited_files.F90 restore working tree file [deprecated]
https://git-scm.com/docs/git-checkout
}}}
== Process ==
{{{
git stash
emacs file.F90
git add file.F90
git commit -m 'comment' 
git status 
git diff dev_2021_rk3 remotes/origin/dev_2021_rk3
git push
}}}

== Create a branch post commit ==
{{{
git clone xxx
git switch main
emacs files.F90
git add file.F90
git commit -m 'comments'
git log 
git checkout #sha
git branch MY_BRANCH
git switch MY_BRANCH
git merge main (modified)
git push --set-upstream origin MY_BRANCH
}}}