Hi Monks, I'm trying to replace multiple fields with blank spaces using one-liner

It works when i do one at a time, but not when i try and combine them 

perl -ne 'substr ( $_,2,8 ) = "        " && substr ( $_,15,5 ) = "    
+ " if /^AB/ ; print $_;' $1 > $1.tmp

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The simple test file is AB2014052012345HELLOWORLD 

 For some reason I end up with the following result:
AB     12345     WORLD

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there should be 8 blank spaces after AB, but i'm only getting 5. I am, however, correctly getting 5 spaces before WORLD.

Any help is much appreciated

In reply to Multiple substr in Perl one-liner by dirtdog

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