NAME

du − disk usage

SYNOPSIS

­du [ ­-a ] [ ­-f ] [ ­-n ] [ ­-q ] [ ­-s ] [ ­-t ] [ ­-u ] [ -bsize ] [ ­file ...  ]

DESCRIPTION

­Du gives the number of Kbytes allocated to data blocks of named ­files and, recursively, of files in named directories.  It assumes storage is quantized in units of 1024 bytes (Kbytes) by default.  Other values can be set by the ­-b option; ­size is the number of bytes, optionally suffixed ­k to specify multiplication by 1024.  If ­file is missing, the current directory is used.  The count for a directory includes the counts of the contained files and directories. 

The ­-a option prints the number of blocks for every file in a directory.  Normally counts are printed only for contained directories. 

The ­-f option ignores errors, otherwise it stops on the first error. 

The ­-n option prints the size in bytes and the name of each file; it sets -a. 

The ­-t option prints, in the format of ­du -n, the modified time of each file rather than the size.  If the options ­-tu are specified then the accessed time is printed. 

The ­-q option prints, in the format of ­du -n, the QID of each file rather than the size. 

Finally, the ­-s option causes ­du to descend the hierarchy as always, but to print only a summary line for each file.

SOURCE

­/sys/src/cmd/du.c

Plan 9  —  March 26, 2002