{ncitl0}kkavu023(1)$ ls
emails.txt   lexAnalyser.java  parser1.lex~   seglab3.doc
emails.txt~  parser1.lex       SEG  2106.doc
{ncitl0}kkavu023(2)$ flex parser1.lex
{ncitl0}kkavu023(3)$ gcc lex.yy.c -o sparmfinder.exe
{ncitl0}kkavu023(4)$ sparmfinder.exe < emails.txt
Hit ^Z followed by enter to finish
--- Lines           : 10
{ncitl0}kkavu023(5)$ sparmfinder.exe > output.txt