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| Thread | Thread Starter | Forum | Replies | Last Post |
| egrep | krao | UNIX for Dummies Questions & Answers | 4 | 07-03-2008 11:13 AM |
| Egrep | risshanth | UNIX for Dummies Questions & Answers | 2 | 06-26-2008 08:21 AM |
| help on egrep | arund_01 | Shell Programming and Scripting | 2 | 05-13-2008 02:26 PM |
| Egrep cheat sheet anywhere? Looking for meaning of egrep -c | leelm | UNIX for Dummies Questions & Answers | 2 | 01-11-2008 03:37 PM |
| help with egrep | akDBA | UNIX for Dummies Questions & Answers | 9 | 08-02-2006 06:33 AM |
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07-26-2008
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help on egrep
HI,
I have two files filea, fileeb filea z283110z67 xx65686377 xx654681zz xx652836xx xx653881zz xx65480z11 xx654z5466 xx65510000 xx65670000 xx656z0000 xx656z1822 fileb z283110z67 xx65686377 xx654681zz xx652836xx xx653881zz xx65480z11 xx654z5466 xx65510000 xx65670000 xx656z0000 xx656z1822 xx65370000 xx65182733 xx653z0000 xx652z36xx xx65676377 z245330104 z245330530 z283241265 xx657136xx xx651z81zz xx645xx555 xx65260z11 xx65xx6377 xx654z0000 xx65265466 xx65z00000 xx65266377 xx656xx555 xx65720000 xx6516z110 xx65140000 xx65167288 z245333z77 i want to grep the contents of fileb which are not present in filea i tried following code egrep -vf filea fileb > filec but segmetation error is coming and a core file is getting dumped Pls help me count of filea is 255418 count of fileb is 401099 |
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07-26-2008
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fileb minus what is in filea
Code:
awk ' FILENAME=="filea" { arr[$0]++ }
FILENAME=="fileb" { if ( ! $0 in arr) {print $0}' filea fileb
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07-26-2008
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You could also use a combination of sort and comm. Your egrep looks fine so I would assume it just can't handle such a large data set.
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