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dd: How to calculate optimal blocksize? [closed]
...k size lets dd do a good job, and the differences between, say, 64 KiB and 1 MiB are minor, compared to 4 KiB versus 64 KiB. (Though, admittedly, it's been a while since I did that. I use a mebibyte by default now, or just let dd pick the size.)
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How do you reference a capture group with regex find and replace in Visual Studio 2012, 2013, 2015,
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To find and replace in VS 2012 and VS 2015 you do the following:
Surround with (), display capture with $1, $2, $n
Example (thanks to syonip)
In the find options, make sure 'use regular expressions' is checked, and put the following as the text to ...
How to install a specific JDK on Mac OS X?
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Overriding fields or properties in subclasses
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Mysql ibdata 丢失或损坏如何通过frm&ibd 恢复数据 - 更多技术 - 清泛网 - ...
...法不能恢复你的数据。my.ini的设置为 innodb_file_per_table = 1。
参考 http://blog.chinaunix.net/uid-24111901-id-2627876.html
1、找回表结构，如果表结构没有丢失直接到下一步
a、先创建一个数据库，这个数据库必须是没有表和任何操作的。...
Does MongoDB's $in clause guarantee order
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How to find reason of failed Build without any error or warning
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What is more efficient? Using pow to square or just multiply it with itself?
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std::cout << elapsed << " "; \
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return x; \
}
TEST(1, b)
TEST(2, b*b)
TEST(3, b*b*b)
TEST(4, b*b*b*b)
TEST(5, b*b*b*b*b)
template <int exponent>
double testpow(double base, long loops)
{
double x = 0.0;
boost::posix_time::ptime startTime = now();
for (long...
Simple calculations for working with lat/lon and km distance?
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The approximate conversions are:
Latitude: 1 deg = 110.574 km
Longitude: 1 deg = 111.320*cos(latitude) km
This doesn't fully correct for the Earth's polar flattening - for that you'd probably want a more complicated formula using the WGS84 reference ellipsoid (the m...
awk without printing newline
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awk '{sum+=$3}; END {printf "%f",sum/NR}' ${file}_${f}_v1.xls >> to-plot-p.xls
print will insert a newline by default. You dont want that to happen, hence use printf instead.
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