diff options
Diffstat (limited to 'man7/units.7')
| -rw-r--r-- | man7/units.7 | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/man7/units.7 b/man7/units.7 index ca2bd2d..da0492f 100644 --- a/man7/units.7 +++ b/man7/units.7 @@ -3,7 +3,7 @@ .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" -.TH units 7 2023-02-10 "Linux man-pages 6.05.01" +.TH units 7 2023-10-31 "Linux man-pages 6.7" .SH NAME units \- decimal and binary prefixes .SH DESCRIPTION @@ -41,7 +41,7 @@ R ronna 10\[ha]27 = 1000000000000000000000000000 Q quetta 10\[ha]30 = 1000000000000000000000000000000 .TE .RE -.PP +.P The symbol for micro is the Greek letter mu, often written u in an ASCII context where this Greek letter is not available. .SS Binary prefixes @@ -70,7 +70,7 @@ Before these binary prefixes were introduced, it was fairly common to use k=1000 and K=1024, just like b=bit, B=byte. Unfortunately, the M is capital already, and cannot be capitalized to indicate binary-ness. -.PP +.P At first that didn't matter too much, since memory modules and disks came in sizes that were powers of two, so everyone knew that in such contexts "kilobyte" and "megabyte" meant @@ -81,26 +81,26 @@ regarded as the "real true meaning" when computers were involved. But then disk technology changed, and disk sizes became arbitrary numbers. After a period of uncertainty all disk manufacturers settled on the standard, namely k=1000, M=1000\ k, G=1000\ M. -.PP +.P The situation was messy: in the 14k4 modems, k=1000; in the 1.44\ MB .\" also common: 14.4k modem diskettes, M=1024000; and so on. In 1998 the IEC approved the standard that defines the binary prefixes given above, enabling people to be precise and unambiguous. -.PP +.P Thus, today, MB = 1000000\ B and MiB = 1048576\ B. -.PP +.P In the free software world programs are slowly being changed to conform. When the Linux kernel boots and says -.PP +.P .in +4n .EX hda: 120064896 sectors (61473 MB) w/2048KiB Cache .EE .in -.PP +.P the MB are megabytes and the KiB are kibibytes. .SH SEE ALSO .UR https://www.bipm.org/\:documents/\:20126/\:41483022/\:SI\-Brochure\-9.pdf |