ROBOCOPY SOURCE DESTINATION /?

1. Copy Options (Selecting What to Copy)

/S : Copy subdirectories, but not empty ones.

/E : Copy subdirectories, including empty ones.

/LEV:n : Only copy the top n levels of the source directory tree.

/Z : Copy files in restartable mode (survives network drops).

/B : Copy files in Backup mode (overrides permission restrictions).

/ZB : Uses restartable mode; if access is denied, switches to Backup mode automatically.

/J : Copy using unbuffered I/O (recommended for very large files like VHDs to prevent RAM caching).

/MIR : Mirror a directory tree (equivalent to /E plus /PURGE). Warning: deletes files in destination that no longer exist in source.

/MOV : Moves files (deletes them from source after copying).

/MOVE : Moves files and directories (deletes them from source after copying).

2. File Selection Options (Filtering)

/XO : eXclude Older files (skips files if destination is newer).

/XN : eXclude Newer files (skips files if destination is older).

/XC : eXclude Changed files (same timestamp, different size).

/XN : eXclude Newer files.

/A : Copy only files with the Archive attribute set.

/M : Copy only files with the Archive attribute and turn it off.

/MAX:n : Maximum file size limit (excludes files bigger than n bytes).

/MIN:n : Minimum file size limit (excludes files smaller than n bytes).

/MAXAGE:n : MAXIMUM file AGE (excludes files older than n days or date).

/MINAGE:n : MINIMUM file AGE (excludes files newer than n days or date).

/XF file [file]... : eXclude Files matching given names/paths/wildcards.

/XD dirs [dirs]... : eXclude Directories matching given names/paths.

3. Retry Options (Error Handling)

/R:n : Number of Retries on failed copies (default is 1,000,000). Set to /R:0 to skip errors instantly.

/W:n : Wait time between retries (default is 30 seconds). Set to /W:0 to skip delay.

/REG : Save /R:n and /W:n in the Registry as default settings.

/TBD : Wait for share names to be defined (retry error 67).

4. Logging & Performance Options

/MT[:n] : Do Multi-Threaded copies with n threads (default is 8, max is 128). Gives massive speed boosts on modern CPUs.

/L : List only — don't copy, delete, or timestamp any files. (Dry-run mode).

/V : Produce verbose output, showing skipped files.

/TS : Include source file Time Stamps in the output.

/FP : Include Full Pathnames of files in the output.

/NJH : No Job Header logged.

/NJS : No Job Summary logged.

/LOG:file : Output status to log file (overwrites existing log).

/LOG+:file : Output status to log file (appends to existing log).

/TEE : Output to console window, as well as to the log file.