# Functions
Abs get file absolute path.
Basename get filename.
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Dirname get file dir name.
Exist judge whether exists filepath.
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FileSize obtain file size.
Format the path.
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IsDir judge whether is a dir.
IsFile judge whether is a file.
Join the path.
Mkdir create a folder.
MkParentDir create a path's parent dir.
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Remove file or folder.
RemoveFile remove a file.
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Split get file dir name.
Suffix get file suffix.