ls -lah
-h
When used with the -l option, use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and Petabyte in order to reduce the number of digits to three or less using base 2 for sizes.
Example
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ls -lah op*
-rw-r–r– 1 root www-data 11G 2012-09-02 16:49 op.dump
-rw-r–r– 1 root www-data 3.1G 2012-09-03 08:19 op.tgz
[/sourcecode]
