i want a perl script that reads file2 and print the lines which has any of the words listed in file1 (i.e. either a_c or b_c or c_c) and save those lines in new file.

Just on the off-chance that this isn't just a programming exercise it is worth pointing out that grep can do this already:

grep -f file1 file2 > newfile

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In reply to Re: How to read the regular expression from another file? by hippo
in thread How to read the regular expression from another file? by sumathigokul

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