一、分支的创建#

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$ git checkout -b dev
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Switched to a new branch 'dev'

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$ git branch dev
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$ git checkout dev
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Switched to branch 'dev'

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$ git add readme.txt
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$ git commit -m "branch test"
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[dev b17d20e] branch test
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 1 file changed, 1 insertion(+)

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git branch -d dev