How do you create a new project/repository?
A git repository is simply a directory containing a special .git
directory.
This is different from "centralised" version-control systems (like subversion), where a "repository" is hosted on a remote server, which you checkout
into a "working copy" directory. With git, your working copy is the repository.
Simply run git init
in the directory which contains the files you wish to track.
For example,
cd ~/code/project001/
git init
This creates a .git
(hidden) folder in the current directory.
To make a new project, run git init
with an additional argument (the name of the directory to be created):
git init project002
(This is equivalent to: mkdir project002 && cd project002 && git init)
To check if the current current path is within a git repository, simply run git status
- if it's not a repository, it will report "fatal: Not a git repository"
You could also list the .git
directory, and check it contains files/directories similar to the following:
$ ls .git
HEAD config hooks/ objects/
branches/ description info/ refs/
If for whatever reason you wish to "de-git" a repository (you wish to stop using git to track that project). Simply remove the .git
directory at the base level of the repository.
cd ~/code/project001/
rm -rf .git/
Caution: This will destroy all revision history, all your tags, everything git has done. It will not touch the "current" files (the files you can currently see), but previous changes, deleted files and so on will be unrecoverable!
To turn arbitrary extended object reference into SHA-1, use simply git-rev-parse, for example
git rev-parse HEAD
or
git rev-parse --verify HEAD
You can also retrieve the short version like this
git rev-parse --short HEAD
Sidenote: If you want to turn references (branches and tags) into SHA-1, there is git show-ref
and git for-each-ref
.
Best Answer
Once you have started the SSH agent with:
Do either:
To add your private key to it:
This will ask you your passphrase just once, and then you should be allowed to push, provided that you uploaded the public key to Github.
To add and save your key permanently on macOS:
This will persist it after you close and re-open it by storing it in user's keychain.
To add and save your key permanently on Ubuntu (or equivalent):