pure-ftpd配置用户只有上传权限，没有修改，删除权限

在pure-ftpd.conf文件中找到以下参数

# Allow users to resume and upload files, but *NOT* to delete them.

KeepAllFiles                no
# Set to 'yes' if you don't want your users to rename files.

NoRename                  no
将上面两个参数更改成yes，重启pure-ftpd就能够了