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# get all 2 char unix utilities
for i in /usr/local/sbin /usr/local/bin /usr/sbin /usr/bin /sbin /bin ; do find $i >> qq ; done
while read i; do basename $i >> qq.basename ; done < qq
cat qq.basename |sort|uniq|grep  -w '^\w\{2\}$' > qq.basename.sort.2
# print man description
while read i; do man -f $i >> qq.basename.sort.2.man ; done < qq.basename.sort.2

7z (1)               - A file archiver with highest compression ratio
ar (1)               - create, modify, and extract from archives
as (1)               - the portable GNU assembler.

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ApplicationContext ctx = SpringApplication.run(Application.class, args);
String[] beanNames = ctx.getBeanDefinitionNames();
Arrays.sort(beanNames);
for (String beanName : beanNames) {
    System.out.println(beanName);
}

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alias tdebug='cd /opt/tomcat; bin/catalina.sh jpda start; cd - > /dev/null'
alias tlogd='rm /opt/tomcat/logs/*'
alias tstart='cd /opt/tomcat; bin/startup.sh; cd - > /dev/null'
alias tstat='ps -ef|grep tomcat|grep -v grep'
alias tstop='/opt/tomcat/bin/shutdown.sh'


//void arrays - Which of the following doesn’t compile

void[] voids1 = new void[1]; (1)

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public class BST <T extends Comparable<T>> implements Iterable<T>
{
   public static void main(String[] args)
   {
      Integer[] a = {1,5,2,7,4};
      BST<Integer> bst = new BST<Integer>();
      for(Integer n : a) bst.insert(n);

      bst.preOrderTraversal();
      System.out.println();

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import static java.util.stream.Collectors.counting;
import static org.junit.Assert.assertArrayEquals;

import java.util.Arrays;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

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package trp2.redonejunit4;


import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import org.junit.Test;

public class TradeExecutorJUnit4Test {

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package trp2.redonejunit5;


import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertThrows;

import org.junit.jupiter.api.Test;

class TradeExecutorJUnit5Test {

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import static org.junit.jupiter.api.Assertions.assertEquals;

import java.util.HashMap;
import java.util.Map;

import org.junit.jupiter.api.Test;

public class ConvertMoneyToEnglish {

    public static String convertMoneyToEnglish(int i) {

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<!DOCTYPE NETSCAPE-Bookmark-file-1>
<!-- This is an automatically generated file.
     It will be read and overwritten.
     DO NOT EDIT! -->
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
<TITLE>Bookmarks</TITLE>
<H1>Bookmarks Menu</H1>

<DL><p>
    <DL><p>

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git log --oneline --decorate --all --graph