i have this commits in my local and remote repository
A B C
and master points to c
i want to change master to B (or A) in my local and remote

after tried this commands:
git reset --hard
git push -f origin master

that commands change master to B but also delete c commit so i can't checkout to c in future. how can i do that without deleting any commit or history?
just change master's pointer to older commit id in local and remote
A B C
|
master
A B C
|
master

This cheatsheet is awesome! I love it.

One big thing, though, many commands are OS X specific. Should that be mentioned up front? Could trip up somebody learning CLI and trying to apply those commands on Linux or another OS.

Examples: pbcopy and open.

We are using a variety of syntax to indicate placeholder parameters and such. Can we decide on a syntax we will use globally?

Something like wrapping parameters in carrots seems like it could work nicely and not conflict with the commands?

e.g.

cd <file>

git checkout <branch-name>

ssh <username>@<url or ip>

This could potentially conflict with using the command line > and >> operators.

Any thoughts?

"open" works only in OSX, there is no other posix operating system to use it. for example on most Linux distribution it does something different then opening a file with the default app.

Looks like we got a new server-commands file which is awesome, but hoping to get a bit more documentation for apt-get as well as even a shot description for the usage of sudo.

Do you think we should cover use and generation of SSH keys? It could be useful for the server commands / administration section but it also might be going to deep for this repo which is generally meant to be just the basics.

Should we just link to external resources?