Category: Life

经常 commit –amend，merge，rebase，reset –hard 后，会产生一些没有引用的 objects，这些有的可能会恢复你误操作后的修改，但是大部分时间是没用的。想着清理一下。

先查看有哪些

git fsck --full

Dangling blob = A change that made it to the staging area/index, but never got committed. One thing that is amazing with Git is that once it gets added to the staging area, you can always get it back because these blobs behave like commits in that they have a hash too!!

Dangling commit = A commit that isn’t directly linked to by any child commit, branch, tag or other reference. You can get these back too!

Dangling tree

然后查看已经没有的引用

git reflog expire --expire=now --all

git reflog: record when refs were update in the local repository, useful for recovering lost commits

清理

git gc --prune=now

git gc: clean up and optimize the local repository

参考：
http://www.tekkie.ro/news/howto-remove-all-dangling-commits-from-your-git-repository/
https://git-scm.com/docs/git-fsck
https://git-scm.com/book/en/v2/Git-Internals-Maintenance-and-Data-Recovery

通过 systemctl 控制

1. 字符界面

systemctl set-default multi-user.target

2. 图形界面

systemctl set-default graphical.target

先装 bitbucket 中的 origin 命名成 bitbucket

git remote rename origin bitbucket

在 github 添加 origin

git remote add origin https://github.com/username/myproject.git

将 master 发上去

git push origin master

将 bitbucket 删掉

git remote rm bitbucket

在这里操作可以查看 .git/config 中的变化

http://www.blackdogfoundry.com/blog/moving-repository-from-bitbucket-to-github/

使用 pigz nc tar 组合命令完成

发送方( pigz -4 代表压缩等级）

tar c 20151014 | pigz -4 | nc -l 3389

接收方

nc 192.168.1.55 3389 | pigz -d | tar xf -

直接输出

stat -c %Y filename

参考：

https://guides.github.com/features/mastering-markdown/

mac 下工具

sublime + markdown preview