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Need sed help

Posted on 2014-04-08
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Last Modified: 2014-04-08
I need to know how to delete a line using a wildcard using sed.  The line begins with
!R! BARCODE.  The rest of the line can varies depending on the item.
So how do I tell sed to delete the !R! BARCODE and everything afterwards to the end of the line.  I don't want to actually remove the line, just all the test on the line that begins with !R! BARCODE.
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Question by:9thTee
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Accepted Solution

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woolmilkporc earned 500 total points
ID: 39987309
sed 's/^!R! BARCODE.*//' inputfile > outputfile

This will create a changed "outputfile" leaving "inputfile" as is.

If your sed supports it you can use the "-i" flag to change "inputfile" in place and create an unchanged  backup file "inputfile.bak" in the same go:

sed -i.bak 's/^!R! BARCODE.*//' inputfile
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Expert Comment

by:tel2
ID: 39987313
> The line begins with !R! BARCODE.
> I don't want to actually remove the line, just all the test on the line that begins with !R! BARCODE.


So do you want to be left with a blank line, 9thTee?
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Author Comment

by:9thTee
ID: 39987321
Yes tel2, a blank line.
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Expert Comment

by:tel2
ID: 39987326
In that case, woolmilkporc's solutions should work for you.
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Author Closing Comment

by:9thTee
ID: 39987585
Perfect!
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