in reply to Re^4: How to write a program to read stdin or command line?
in thread How to write a program to read stdin or command line?
With -p, whilst you can conditionally undef $_ to avoid it being printed; if you are also using -l, you will get unwanted blank lines:
C:\test>type junk.txt 1 2 3 4 5 C:\test>perl -nle"$_ & 1 and print" junk.txt 1 3 5 C:\test>perl -ple"$_ & 1 or undef $_ and next" junk.txt 1 3 5
And in fact the next in your example serves no purpose:
C:\test>perl -ple"$_ & 1 or undef $_" junk.txt 1 3 5
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Re^6: How to write a program to read stdin or command line?
by ikegami (Patriarch) on Oct 03, 2007 at 13:36 UTC |
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Seekers of Perl Wisdom