git rebase使用（部分）

git rebase使用（部分）

重新排序commit

现在历时中有这样的三个commit，他们是

commit 9f75177750050e6d9339b820c66128bcb407f8c2
Author: FIRE_TRAY .com>
Date:   Sun Oct 18 22:48:41 2015 +0800

    feature: add C.txt

commit 6a48afc037172a4c20019f42d27e5faa853207ae
Author: FIRE_TRAY .com>
Date:   Sun Oct 18 22:48:15 2015 +0800

    feature: add B.txt

commit 2bf31e1235b6dcd1948123df226ac18a690bcb95
Author: FIRE_TRAY .com>
Date:   Sun Oct 18 22:47:55 2015 +0800

    feature: add A.txt

现在希望把commit “feature: add B.txt”放在 “add C.txt“之后。那么就需要rebase了。

首先输入git rebase -i

$ git rebase -i 2bf31e1235b6dcd1948123df226ac18a690bcb95
pick 6a48afc feature: add B.txt
pick 9f75177 feature: add C.txt

# Rebase 2bf31e1..9f75177 onto 2bf31e1 (2 command(s))
#
# Commands:
# p, pick = use commit
# r, reword = use commit, but edit the commit message
# e, edit = use commit, but stop for amending
# s, squash = use commit, but meld into previous commit
# f, fixup = like "squash", but discard this commit's log message
# x, exec = run command (the rest of the line) using shell
#
# These lines can be re-ordered; they are executed from top to bottom.
#
# If you remove a line here THAT COMMIT WILL BE LOST.
#
# However, if you remove everything, the rebase will be aborted.
#
# Note that empty commits are commented out

按“i”进入编辑模式，将B，C所在行调换，让Git先使用C的commit在应用B的commit，保存并退出，再次log一下发现commit顺序调换了。

localhost:learngit liufangliang$ git log --pretty=oneline
544197534071695a2b7376236e31974ea8b461ba feature: add B.txt
08b57309156b00024cafad7621740ed74f2129d6 feature: add C.txt
2bf31e1235b6dcd1948123df226ac18a690bcb95 feature: add A.txt

合并commit

根据上次时Git的提示，我们可以使用s或者squash来压缩commit，还是进行上次的操作，不过把需要合并的commit前的pick改为s或者squash。主意压缩的commit会被压缩到前一个commit中，所以需要有前驱commit才行。以最开始状态为例，如果想把C压缩到B中去，那么需要执行：

$ git rebase -i 2bf31e1235b6dcd1948123df226ac18a690bcb95

并在编辑模式下将C部分的pick改为s。保存退出，再log发现C不见了，C的commit已经和B的合并，Git repo中的文件依旧为ABC三个，添加C的操作并没有失效

更改commit注释

更改最新提交的commit注释

直接输入以下指令即可

$ git commit --amend

更改历史commit的注释

由于上述命令仅用于更改最新的提交，如果需要改动历史commit的注释，需要利用rebase对commit重排序，把需要改动的commit顶置然后修改即可。