wget http://courses.cs.washington.edu/courses/cse391/20sp/lectures/3/lec03Files.zip
unzip lec03Files.zip 
cd 3
ls
wc -l < bean.txt
wc -l < beans.txt
javac CompilerErrors.java && java CompilerErrors
java CompilerErrors.java 
java CompilerErrors
javac CompilerErrors.java || java CompilerErrors
javac CompilerErrors.java ; java CompilerErrors
mkdir dir1 && cd dir1
ls
javac *.java
ls
javac StdInputProgram.java 
java StdInputProgram < beans.txt
man javac
ls *.java | javac
ls
ls *.java
ls *.java | xargs javac
ls
ls *.java > tocompile.txt
vim tocompile.txt 
cat tocompile.txt | xargs javac
ls 
xargs javac < tocompile.txt
ls *.java > javac
ls
vim javac
rm javac
javac *.java
find -name "*.java"
man ls
find -name "*.java"
ls
java Mystery
java Mystery > mystery_out.txt
cat mystery_out.txt 
vim Mystery.java 
java Mystery 2> mystery_out.txt
cat mystery_out.txt 
java Mystery > mystery_out.txt 2>&1
cat mystery_out.txt 
java Mystery 2>&1 > mystery_out.txt
java Mystery > mystery_out.txt 2>&1
java Mystery > mystery_out.txt 2> myster_err
cat myster_err 
cat mystery_out.txt 
java Mystery > mystery_out.txt 2>&1
java Mystery | tee tee_out.txt
cat tee_out.txt 
java Mystery 2>&1 | tee tee_out.txt
cat tee_out.txt 
find -name "*.java" | xargs javac
javac $(find -name "*.java")
echo "abcdef"
echo "abcdef" | cut -c4
echo "abcdef" | cut -c4-6
echo "abcdef"
echo "a,b,c,d,e,f" | cut -d, -f1
echo "a,b,c,d,e,f" | cut -d, -f1-3
echo "a,b,c,d,e,f" | cut -d, -f1,3
echo "cacacca" | cut -da -f1,3
echo "a;b;c;d" | cut -d; -f1,3
echo "a;b;c;d" | cut -d\; -f1,3
cd /cse/web/courses
ls
cd /cse/web/courses/logs
ls
tail common_log
fail common_log
tail common_log
tail common_log | cut -d\" -f4
tail -f common_log | cut -d\" -f4