{TAIL ~ The basic file system operations} are searching for a file within a directory, reading from {HEAD ~ a file}, and writing to a file 
{ TAIL ~ The basic file system operations } are searching for a file within a directory , reading from { HEAD ~ a file } , and writing to a file
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH