The ACL provides
security for the file. If you don??™t use this command line switch, the destination system uses the
default security settings for that system, which might not provide sufficient security for sensitive
data.
/X Copies the file audit settings in addition to the file ownership and ACL information. File
auditing monitors each file as Windows opens, closes, or modifies it. Using file auditing helps
you track user and system activities, but does cause a performance hit.
/Y and /-Y Suppresses or enforces the prompt for overwriting destination files with the same
name as the destination file provided as input to the XCopy command. Use the /Y command line
switch in batch files where you know the batch file will overwrite an existing destination file.
The /-Y command line switch is the default, so you never need to use it.
/Z Copies networked files in restartable mode. If the copy process stops for any reason, XCopy
attempts to restart the file copy.
/B Copies a symbolic link to the target instead of the actual file pointed to by the symbolic link
when the source is a symbolic link.
Working with File Associations and Types
Strictly speaking, you don??™t need to know anything about file associations or file types to work with
files from the command prompt.
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