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Consider unpack instead of a regex:
use warnings; use strict; while (<DATA>) { my @cols = unpack 'A5A28A19A*', $_; if ($cols[0] =~ /^[\d\s]+$/) { # ignore header rows $cols[0] =~ s/\s//g; print "SLOT = $cols[0]\n"; print "Desc = $cols[1]\n"; print "Model = $cols[2]\n"; } } __DATA__ Mod Sub-Module Model Serial ---- --------------------------- ------------------ ----------- 1 Distributed Forwarding Card WS-F6700-DFC3CXL SAL1434RLPY 3 7600 ES+ DFC XL 7600-ES+3CXL JAE14520N29 3 7600 ES+T 20x1GE SFP 76-ES+T-20GQ JAE145301XM 5 Policy Feature Card 3 7600-PFC3CXL JAE14330E6J 5 C7600 MSFC4 Daughterboard 7600-MSFC4 JAE14320QBE 6 Policy Feature Card 3 7600-PFC3CXL JAE14330EAO 6 C7600 MSFC4 Daughterboard 7600-MSFC4 JAE14320QA8 7 Distributed Forwarding Card WS-F6700-DFC3CXL SAL1433QHBR 8 Distributed Forwarding Card WS-F6700-DFC3CXL SAL1433QXF9

Prints:

SLOT = 1 Desc = Distributed Forwarding Card Model = WS-F6700-DFC3CXL SLOT = 3 Desc = 7600 ES+ DFC XL Model = 7600-ES+3CXL SLOT = 3 Desc = 7600 ES+T 20x1GE SFP Model = 76-ES+T-20GQ SLOT = 5 Desc = Policy Feature Card 3 Model = 7600-PFC3CXL SLOT = 5 Desc = C7600 MSFC4 Daughterboard Model = 7600-MSFC4 SLOT = 6 Desc = Policy Feature Card 3 Model = 7600-PFC3CXL SLOT = 6 Desc = C7600 MSFC4 Daughterboard Model = 7600-MSFC4 SLOT = 7 Desc = Distributed Forwarding Card Model = WS-F6700-DFC3CXL SLOT = 8 Desc = Distributed Forwarding Card Model = WS-F6700-DFC3CXL

In reply to Re: How we can do regex of this? by toolic
in thread How we can do regex of this? by xMiDgArDx

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