git alias有什么作用？
可以允许你自己设置缩写命令，让你不必每次打很长的命令，类似于快键键。
git alias配置
git alias 需要配置才能使用，配置包括全局和本地的。全局的配置（windows系统）一般在c:\username\.gitconfig下；本地配置.git文件夹config下。
git alias如何设置
第一种方法是直接使用git config命令：
git config --global alias.co checkout
git config --local alias.co checkout第二种方法是在对应的配置文件中加入：
[alias]
co = checkout
我的alias配置
[alias]
#list alias
la = "!git config -l | grep alias | cut -c 7-"
#branch
br = branch
## Deleting local branches that have been merged and deleted:
delete-merged = "!git branch --merged | grep -v \"^\\s*master$\" | grep -v \"\\*\" | xargs -n 1 git branch -d"
dm = !git delete-merged
## git track branch-name (to track with origin)
track = "!f() { git branch --set-upstream-to=origin/$1 $1; }; f"
##git del branch-name (to delete locally)
del = branch -D
co = checkout
##To create a new branch at the current commit, or move an existing branch,
mb = checkout -B
##To checkout a particular file from a different branch git cb other-branch /file/to/checkout
cb = "!cb() { git checkout $1 -- $2; }; cb"
recent = for-each-ref --count=10 --sort=-committerdate refs/heads/ --format=\"%(refname:short)\"
#log
l = log --pretty=format:"%C(yellow)%h\\ %ad%Cred%d\\ %Creset%s%Cblue\\ [%cn]" --decorate --date=short
ll = log --pretty=format:"%C(yellow)%h%Cred%d\\ %Creset%s%Cblue\\ [%cn]" --decorate --numstat
lll = log -u
last = log -1 HEAD
graph = log --graph --all --decorate --stat --date=iso
local = log --oneline --no-merges origin/master..HEAD
upstream = log --oneline --no-merges ..origin/master
overview = log --all --oneline --no-merges
today = log --since=00:00:00 --all --no-merges --oneline --author='your email'
recap = log --all --no-merges --oneline --author='your email'
# changelog = log --oneline --no-merges ${1-$(git describe --abbrev=0)}..HEAD
who = shortlog -n -s --no-merges
#diff
diffc = diff --cached HEAD^
wdiff = !git diff --word-diff
#stage
st = status
s = "!stage() { git add `git st | sed -n $1p | awk -F' ' '{ print $2 }'`; git st; }; stage"
u = "!unstage() { git reset HEAD `git st | sed -n $1p | awk -F' ' '{ print $2 }'`; git st; }; unstage"
unstage = reset HEAD --
aa = !git add -u && git add . && git st
#commit
ci = commit
cm = "!cm() { git commit -m \"$1\"; }; cm"
ca = commit --amend --no-edit
rof = "!f() { git show HEAD -- $1 | git apply --reverse;}; f"
ccfl = !git commit-changed-file-list
commit-changed-file-list = "!f() { git show $1 --name-only; }; f"
#reset
##git undo (to undo the last commit and leave the files there)
undos = reset --soft HEAD~1
undoh = reset --hard HEAD~1
re1 = reset HEAD^
reh = reset --hard
rec = !git reh && git clean -fd
#rebase
##To rebase interactively from a number of commits back git ri 5:
ri = "!ri() { git rebase -i HEAD~$1; }; ri"
#push
pp = "!f() { git pull -r && git push; }; f"
#stash
# git stan 3 (to apply the 3rd item in the stash)
stan = "!f() { git stash apply stash@{$1}; }; f"参考链接：
https://github.com/csswizardry/csswizardry.github.com/issues/66
https://github.com/jakubnabrdalik/gitkurwa
https://dev.to/committedsw/useful-git-alias-47in