DU (I) 1/20/73 DU (I) NAME du -- summarize disk usage SYNOPSIS du [ -s ] [ -a ] [ name ... ] DESCRIPTION du gives the number of blocks contained in all files and (recursively) directories within each specified directory or file name. If name is missing, . is used. The optional argument -s causes only the grand total to be given. The optional argument -a causes an entry to be generated for each file. Absence of either causes an entry to be generated for each directory only. A file which has two links to it is only counted once. FILES . SEE ALSO -- DIAGNOSTICS -- BUGS Non-directories given as arguments (not under -a option) are not listed. Removable file systems do not work correctly since i-numbers may be repeated while the corre- sponding files are distinct. Du should maintain an i-number list per root directory encountered.