The powerful Copy command of Win7, robocopy, runs the robocopy example in the command prompt: robocopy E: \ xutianlong F: \ xutianlong/E to copy sub-directories, including empty sub-directories. Parameter description 1. Copy option: parameter description:/S: Copy sub-directories, but do not copy empty sub-directories. /E: Copy sub-directories, including empty sub-directories. /Lev: n: only copies the first n layers of the source directory tree. /Z: copy the file in restart mode. /B: Copy files in backup mode. /ZB: Use the restart mode. If access is denied, use the backup mode. /EFSRAW: Copies all encrypted files in efs raw mode. /COPY: COPY Tag: content of the file to be copied (/COPY: DAT by default ). (Copy Tag: D = data, A = attribute, T = timestamp ). (S = Security = ntfs acl, O = Owner information, U = audit information ). /DCOPY: T: Specifies the copy directory timestamp. /SEC: Copies secure files (equivalent to/COPY: DATS ). /COPYALL: COPY all file information (equivalent to/COPY: DATSOU ). /NOCOPY: do not copy any file information (used with/PURGE ). /SECFIX: security of all files, even files that are skipped. /TIMFIX: indicates the time when all files are repaired, even if they are skipped. /PURGE: Delete the target file/directory that no longer exists in the source. /MIR: Image directory tree (equivalent to/E and/PURGE ). /MOV: Move a file (copy and delete it from the source ). /MOVE: MOVE files and directories (copy and delete from the source ). /A +: [RASHCNET]: add the specified attribute to the copy file. /A-: [RASHCNET]: deletes A specified attribute from A copy file. /CREATE: only CREATE a directory tree and a file with zero length. /FAT: only use the 8.3 FAT file name to create the target file. /256: Close the support for ultra-long paths (> 256 characters. /MON: n: Monitoring source; run again when more than n changes are found. /MOT: m: Monitoring source; If changed, run it again within m minutes. /RH: hhmm-hhmm: running hours-the time when a new copy can be started. /PF: Check the running hours based on each file (rather than each step. /IPG: n: The spacing (MS) between program packages to release the bandwidth on low-speed lines. Ii. file selection option: parameter explanation:/A: only copy files with an archive attribute set. /M: only copy files with archive attributes and reset the archive attributes. /IA: [RASHCNETO]: contains only files with any given property set. /XA: [RASHCNETO]: exclude files with any given property set. /XF file [file]...: exclude files that match the given name/path/wildcard. /XD directory [Directory]...: Exclude directories that match the given name/path. /XC: exclude changed files. /XN: exclude newer files. /XO: exclude older files. /XX: exclude unnecessary files and directories. /XL: exclude isolated files and directories. /IS: contains the same file. /IT: contains the adjusted file. /MAX: n: Maximum File Size-exclude files larger than n Bytes. /MIN: n: Minimum File Size-exclude files smaller than n Bytes. /MAXAGE: n: The longest time when a file exists-exclude files earlier than n days/date. /MINAGE: n: specifies the minimum time when a file exists.-exclude files later than n days/date. /Maxglad: n: Maximum last access date-exclude files not used since n. /Minglad: n: Minimum last access date-exclude files used since n. (If n <1900 then n = n days, else n = YYYYMMDD date ). /XJ: exclude joining points. (This is usually included by default ). /FFT: Assume the FAT file time (2 seconds granularity ). /DST: makes up for the DST time difference of one hour. /XJD: exclude directory joining points. /XJF: exclude file joining points.