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Deleting lines from a file Deleting lines from a file
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Old 09-21-2005
Nirgude07 Nirgude07 is offline
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No I am running this under sh . I will try this out with ksh..thanks for your help...still suggest me the better way to do this if you think any...truly thanks in advance.
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Old 09-21-2005
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reborg reborg is offline Forum Staff  
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Code:
perl -pi -e '$_ = "" if ($. >= <start> && $. <= <end> );'
Where <start> is the first line you want to delete and <end> is the last line you want to delete.

eg:
Code:
perl -pi -e '$_ = "" if ($. >= 2 && $. <= 4 );' file
deletes lines 2 to 4.
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Old 09-21-2005
Nirgude07 Nirgude07 is offline
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Thank you very much reborg. I wonder if we can do this by using awk...I don't know really.
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Old 09-21-2005
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reborg reborg is offline Forum Staff  
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Yes, but not if you have very long lines, or without opening a nother file. Also perl will be MUCH faster.
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Old 07-01-2009
rakesh_pagadala rakesh_pagadala is offline
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we can also delete records using
sed 'n,xd' inputfile > outputfile
where n would starting range x would be ending range
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