bash 如何更新具有 gzip 压缩的 tar 文件
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How to update tar file that has gzip compression
提问by
I executed:
我执行了：
tar -Ppcfz backup.tar.gz on /location/
This will: Create a new tar file for the /location/ Preserve paths, Preserve permissions, Compress using gzip
这将：为 /location/ 创建一个新的 tar 文件 保留路径、保留权限、使用 gzip 压缩
I need to later update this tar file with files from /location/ that have not been added or are new:
我稍后需要使用 /location/ 中尚未添加或新的文件更新此 tar 文件：
tar -Ppuf backup.tar.gz /location/
I get errors:
我收到错误：
tar: This does not look like a tar archive tar: Skipping to next header tar: Archive contains obsolescent base-64 headers tar: Unexpected EOF in archive tar: Error is not recoverable: exiting now
tar：这看起来不像 tar 存档 tar：跳到下一个标题 tar：存档包含过时的 base-64 标题 tar：存档 tar 中出现意外的 EOF：错误不可恢复：现在退出
Help please.
请帮忙。
采纳答案by Michael Hoffman
You could try using the -zflag when updating as well, but my version of tar reports that it can't update compressed archives. So you need to gunzipthe file, then update with tar, then gzip.
您也可以-z在更新时尝试使用该标志，但我的 tar 版本报告说它无法更新压缩档案。所以你需要gunzip文件，然后用tar，然后更新gzip。
