java HelloWorld
java HelloWorld > hello.txt
cat hello.txt
javac HelloWorld.java && java HelloWorld
javac HelloWorld.java ; java HelloWorld
rm HelloWorld.class
vim HelloWorld.java
javac HelloWorld.java ; java HelloWorld
mkdir directory && cd directory
cd ..
vim HelloWorld.java 
javac HelloWorld.java 
java StdInputProgram
head veggies.txt 
java StdInputProgram < veggies.txt 
grep "bean" veggies.txt
java StdInputProgram < grep "bean" veggies.txt
java StdInputProgram (grep "bean" veggies.txt)
grep "bean" veggies.txt > beans.txt
java StdInputProgram < beans.txt
grep "bean" veggies.txt | java StdInputProgram
javac HelloWorld.java
ls
javac HelloWorld.java StdInputProgram.java
ls *.java
ls *.java | javac
ls *.java
javac CommandArgsProgram.java
java CommandArgsProgram cheese banana rhinoceros 
java CommandArgsProgram < veggies.txt
ls *.java | xargs javac
javac *.java
ls *.java > javafiles.txt
vim javafiles.txt
cat javafiles.txt | xargs javac
xargs javac < javafiles.txt
find -name "*.txt"
find -name "*.txt" | xargs wc
cat $(find -name "*.txt")
find -name "*.txt"
cat `find -name "*.txt"`
java HelloWorld > hello.txt
java HelloWorld
java HelloWorld | tee hello2.txt
cat hello2.txt
java HelloWorld > hello3.txt && cat hello3.txt
grep "bean" veggies.txt
grep "bean" veggies.txt | tee bean.txt | sort | uniq
cat bean.txt
java Mystery
java Mystery > mystery_output.txt
cat mystery_output.txt 
vim Mystery.java
java Mystery 1> mystery_output.txt
java Mystery 2> mystery_error.txt
cat mystery_error.txt
cat CompilerErrors.java 
javac CompilerErrors.java 
javac CompilerErrors.java > compiling_output.txt
ls
javac CompilerErrors.java 2> compiling_output.txt
cat compiling_output.txt 
java Mystery
java Mystery > all_output.txt 2>&1
cat all_output.txt 
java Mystery > output.txt 2> error.txt
cat output.txt 
cat error.txt
java Mystery 2> all_output.txt 1>&2