====== Dokuwiki.fl8.jp ======
This page is the page where the administrator's notes and daily records.
transitioning from [[http://wiki.flateight.com/]]
お名前.com
====== Tag Cloud ======
~~TAGCLOUD~~
====== Network/Mask ======
^ CIDR ^ Decimal ^ number of hosts ^ number of addresses^
|/8|255. 0. 0. 0|16,777,214|16,777,216|
|/9 |255.128. 0. 0|8,388,606|8,388,608|
|/10|255.192. 0. 0|4,194,302|4,194,304|
|/11|255.224. 0. 0|2,097,150|2,097,152|
|/12|255.240. 0. 0|1,048,574|1,048,576|
|/13|255.248. 0. 0|524,286|524,288|
|/14|255.252. 0. 0|262,142|262,144|
|/15|255.254. 0. 0|131,070|131,072|
|/16|255.255. 0. 0|65,534|65,536|
|/17|255.255.128. 0|32,766|32,768|
|/18|255.255.192. 0|16,382|16,384|
|/19|255.255.224. 0|8,190|8,192|
|/20|255.255.240. 0|4,094|4,096|
|/21|255.255.248. 0|2,046|2,048|
|/22|255.255.252. 0|1,022|1,024|
|/23|255.255.254. 0|510|512|
|/24|255.255.255. 0|254|256|
|/25|255.255.255.128|126|128|
|/26|255.255.255.192|62|64|
|/27|255.255.255.224|30|32|
|/28|255.255.255.240|14|16|
|/29|255.255.255.248|6|8|
|/30|255.255.255.252|2|4|
===== There is also a command like this =====
# ipcalc -nbm 192.168.65.101/21
NETMASK=255.255.248.0
BROADCAST=192.168.71.255
NETWORK=192.168.64.0
# ipcalc -p 192.168.64.1 255.255.248.0
PREFIX=21
====== PST/PDT/JST ======
PST(UTC-8)
PST(1st Sunday in November 14:00-2nd Sunday in March) to JST(PST+17)\\
JST 0:00 After that (yellow) is the next day
^PST | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
^JST | 17 | 18 | 19 | 20 | 21 | 22 | 23 | @:0 | @:1 | @:2 | @:3 | @:4 | @:5 | @:6 | @:7 | @:8 | @:9 | @:10 | @:11 | @:12 | @:13 | @:14 | @:15 | @:16 |
PDT(UTC-7)
PDT(2nd Sunday in March 14:00-1st Sunday in November) to JST(PDT+16)\\
JST 0:00 After that (yellow) is the next day
^PDT | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
^JST | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | @:0 | @:1 | @:2 | @:3 | @:4 | @:5 | @:6 | @:7 | @:8 | @:9 | @:10 | @:11 | @:12 | @:13 | @:14 | @:15 |
UTC to JST(UTC+9)\\
JST 0:00 After that (yellow) is the next day
^UTC | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
^JST | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | @:0 | @:1 | @:2 | @:3 | @:4 | @:5 | @:6 | @:7 | @:8 |
====== unit ======
===== weight =====
1lbs = 0.453 592 37 kg
1oz floz = 28.349 523 125g
16oz floz = 1lbs
===== length =====
1feet = 0.3048m = 30.48cm
1yd = 0.9144 m = 91.44cm
1mile = 1609.344 m = 1.609344km
3feet = 1yd
1760yd = 1mile