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Simple Redirection, I/O Problem With Bedtools

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Hi Guys, Just a quick question. Its more of a Bash question rather than Bioinformatics, with Bedtools in question.

I mostly pipe the bedtools I/O. Here's a general scenario :

sed 1d fileA.bed | intersectBed -a stdin -b peaks.bed | intersectBed -u -a stdin -b fileB.bed

Now, the problem is fileB is also having a head, which is reported as an error by intersectBed (makes sense, non-integer start).

How can I remove the first line or the head of the fileB on the fly in the pipe.

Thanks


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