grep in pipeline: why it does not work -

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i want extract information output of program. method not work. write rather simple script.

#!/usr/bin/env python  print "first hello world." print "second"

after making script executable, type ./test | grep "first|second". expect show 2 sentences. not show anything. why?

escape expression.

$ ./test | grep "first\|second" first hello world. second

also bear in mind shebang #!/usr/bin/env python, not #/usr/bin/env python.


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