在上一节中咱们已经成功建立版本库而且已经添加test.txt
等文件,这一节咱们继续讲解如何进行版本控制.git
首先咱们先查看test.txt
文件有什么内容吧!bash
# 查看文件内容
$ cat test.txt
git test
git init
git diff
$
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接下来模拟正常工做,接着输入一下内容:ui
# 追加新内容到 test.txt 文件
echo "understand how git control version" >> test.txt
# 查看当前文件内容
$ cat test.txt
git test
git init
git diff
understand how git control version
$
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紧接着运行 git status
看一下输出结果:spa
# 查看文件状态
$ git status
On branch master
Changes to be committed:
(use "git reset HEAD <file>..." to unstage)
modified: test.txt
Changes not staged for commit:
(use "git add <file>..." to update what will be committed)
(use "git checkout -- <file>..." to discard changes in working directory)
modified: test.txt
$
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从上述 git status
命令输出的结果能够看出,test.txt
已经被修改但还没提交,可是具体发生了什么变化却没能告诉咱们,若是可以告诉咱们具体修改细节那就行了!版本控制
运行**git diff
**命令能够实现上述需求code
$ git diff
diff --git a/test.txt b/test.txt
index 729112f..989ce33 100644
--- a/test.txt
+++ b/test.txt
@@ -1,3 +1,4 @@
git test
git init
git diff
+understand how git control version
$
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git diff
命令即查看差别(difference),从输出结果能够看出咱们在最后一行新增了understand how git control version
文字.rem
经过git status
知道文件发生了改动,git diff
让咱们看到了改动的细节,如今咱们提交到版本库就放心多了,还记得上节课如何添加版本库的命令吗?string
分两步操做: git add <file>
和 git commit -m <remark>
it
第一步: git add <file>
io
$ git add test.txt
$
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等一下,在执行 git commit
命令以前,咱们再运行 git status
命令查看一下当前仓库状态:
$ git status
On branch master
Changes to be committed:
(use "git reset HEAD <file>..." to unstage)
modified: test.txt
$
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此时 git status
命令告诉咱们 test.txt
文件已被修改等待提交,好了,那么接着第二步的commit吧!
第二步: git commit -m <remark>
# 提交到版本库并添加备注
$ git commit -m "add understand how git control version"
[master 36f234a] add understand how git control version
1 file changed, 2 insertions(+)
$
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提交后,咱们此时再次运行git status
命令查看当前仓库状态:
$ git status
On branch master
nothing to commit, working tree clean
$
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输出结果显示没有须要提价的改动,工做目录是干净的.
git status
git diff