Imo if you are going to do that then you should just do an s/// 

perl -pe "s/(\d{8}\s+\d{5})(\s+)/$1\n/g" t.txt

[download]

In sure there is a way to do that without needing to copy $1, but I couldnt work it out quickly enough to post.

---
$world=~s/war/peace/g

In reply to Re^2: repeat data at one line and grep as pre-set format by demerphq
in thread repeat data at one line and grep as pre-set format by benlaw

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