> > Dave, actually it's a 2 arguments. Sorry, i did not make it clear in my > question. I used Ramit's hint and it worked. The code should be as follows: > > > > pattern = "({0}|{1})".format(x,y) > > cmd_line = Popen(["egrep", pattern, aLogFile], stdout=PIPE, stdin=PIPE, > stderr=STDOUT) > > > > Regards, > > > > Do Nguyen > > > > If it's two arguments, then you need pattern1 and pattern2. > > But if it works, perhaps egrep is happy with a single argument.
egrep is happy with a single arugment because '(1|2)' is a regular expression meaning match either 1 or 2. Ramit Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology 712 Main Street | Houston, TX 77002 work phone: 713 - 216 - 5423 -- This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email. -- http://mail.python.org/mailman/listinfo/python-list