Displays and alters the compression of files or directories on NTFS partitions.
compact [/c|/u] [/s[:dir]] [/a] [/q] [/i] [/f] [filename[...]]
Parameters
none
Used without parameters, compact displays the compression state of the current directory.
/c
Compresses the specified directory or file.
/u
Uncompresses the specified directory or file.
/s:dir
Specifies that the requested action (compress or uncompress) be applied to all subdirectories of the specified directory, or of the current directory if none is specified.
/a
Displays hidden or system files.
/q
Reports only the most essential information.
/i
Ignores errors.
/f
Forces compression or uncompression of the specified directory or file. This is used in the case of a file that was partly compressed when the operation was interrupted by a system crash. To force the file to be compressed in its entirety, use the /c and /f parameters and specify the partially compressed file.
filename
Specifies the file or directory. You can use multiple file names and wildcard characters (* and ?).