1、为什么不看错误提示呢？
提示说文件已经存在了啊，但是不同的

2、为什么不看命令的帮助呢？

    Install a specified package from SSC

        ssc install pkgname [, all replace]

Options for use with ssc install

    all specifies that any ancillary files associated with the package be downloaded to your
        current directory, in addition to the program and help files being installed.
        Ancillary files are files that do not end in .ado or .sthlp and typically contain
        datasets or examples of the use of the new command.

        You can find out which files are associated with the package by typing ssc describe
        pkgname before or after installing.  If you install without using the all option and
        then want the ancillary files, you can ssc install again.

    replace specifies that any files being downloaded that already exist on your computer be
        replaced by the downloaded files.  If replace is not specified and any files already
        exist, none of the files from the package is downloaded or installed.

        It is better not to specify the replace option and wait to see if there is a problem.
        If there is a problem, it is usually better to uninstall the old package by using ssc
        uninstall or ado uninstall (which are, in fact, the same command).



既然提示说已经有了，如果想要替换掉，用replace选项啊

谢谢，下载了pkg文件，就可以用了，原来以为只能下载HLP文件才能使用。

请问pkg文件在哪里下载呢

为啥总是说没有呢，no match? 哪位大牛帮忙解析下，谢谢！
findit shape2dta

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.   ssc intall shp2dta
ssc intall: invalid subcommand
r(198);
stata中安装shp2dta，老是提醒这个，怎么解决，谢谢