sankars

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Directory\shell\runas]
@="Open Command Window Here as Administrator"

[HKEY_CLASSES_ROOT\Directory\shell\runas\command]
@="cmd.exe /s /k pushd \"%V\""

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# http://stackoverflow.com/questions/17079513/hdfs-replication-factor-change

hadoop fs -setrep -R 2 /

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# http://stackoverflow.com/questions/9860090/in-r-why-is-better-than-subset

subset(airquality, Month == 8 & Temp > 90)

airquality[airquality$Month == 8 & airquality$Temp > 90, ]

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# From http://stackoverflow.com/questions/7027288/error-could-not-find-function-in-r

help.search("some.function")

??some.function

RSiteSearch("some.function")

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# From http://stackoverflow.com/questions/7004710/laply-is-part-of-what-package-in-r

install.packages("pkg")

library("pkg")

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public class Joda implements Directions
{ 
	public static void main(String [] args)
	{
	  
	  // From http://stackoverflow.com/questions/1555262/calculating-the-difference-between-two-java-date-instances
	  
		Interval interval = new Interval(oldTime, new Instant());
		

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 // http://stackoverflow.com/questions/22713652/can-an-interface-method-have-a-body
 
 
 // define static method
 interface Whoa {
        public static void doStuff() {
            System.out.println("This is not default implementation");
        }
 }

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# http://stackoverflow.com/questions/471183/linux-command-line-global-search-and-replace

# not recursive. input the file name

sed -i 's/foo/bar/g' *

# recursive

find -name '*.html' -print -exec sed -i.bak 's/foo/bar/g' {} \;

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# http://stackoverflow.com/questions/7706876/r-script-removing-na-values-from-a-vector
# Sort vectors that have 'NA'

d <- c(1, 100, NA, 10)
max(d, na.rm=TRUE)

# Remove 'NA' in a vector

d <- d[!is.na(d)]

sankars

# http://stackoverflow.com/questions/4984725/how-to-test-cron-job

run-parts -v /etc/cron.weekly