Linux bash calculator 感覺用起來蠻方便，至少是偷懶比較方便，嘻嘻
How to:
1.通過命令行
#scale 表示浮點數的精確位數
[
[email protected] ~]# bc
bc 1.06
Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.
This is free software with ABSOLUTELY NO WARRANTY.
For details type `warranty'.
3+4
7
scale=2;3/4
.75
ctrl +d
2.通過計算文檔統一進行計算
[
[email protected] ~]# vi calc.bc
[
[email protected] ~]# cat calc.bc
3+4
scale=2;3/4
[
[email protected] ~]# bc calc.bc
bc 1.06
Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.
This is free software with ABSOLUTELY NO WARRANTY.
For details type `warranty'.
7
.75
ctrl +d
3.數制的轉換
#ibase 是指輸入的數制，obase是指輸出的數制
[
[email protected] ~]# echo 'ibase=10;obase=2;11'|bc
1011
Reference:
http://www.linuxidc.com/Linux/2012-01/52386p2.htm
