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How to delete last occurence of word using Linux command?

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# 1  
Old 02-24-2013
How to delete last occurence of word using Linux command?
Hi all,
I am trying to delete last occurrence of word using sed command.
for example.
I have input like this
Code:
on a.id1 = b.id1 and
on a.id2 = b.id2 and
on a.id3 = b.id3 and

and I am expecting output like this
Code:
on a.id1 = b.id1 and
on a.id2 = b.id2 and
on a.id3 = b.id3

I just need to delete last occurrence of "and" from the last line only.

Thanks
Last edited by Scott; 02-24-2013 at 01:51 PM.. Reason: Code tags
# 2  
Old 02-24-2013
Pls use code tags as required by forum rules!

That's what I call a slack specification! For just removing that last "and", use
Code:
$ sed '$ s:and::' file
on a.id1 = b.id1 and
on a.id2 = b.id2 and
on a.id3 = b.id3

, but I assume there's more to come... e.g. remove the now trailing blank as well...
# 3  
Old 02-24-2013
Thanks for your quick reply RudiC.But this command is removing all "and"s from each line.
I am getting out put like this.
on a.id1 = b.id1
on a.id2 = b.id2
on a.id3 = b.id3

Thanks
# 4  
Old 02-24-2013
PLEASE use code tags for code and data as required by forum rules!

Did you issue the command as indicated? The $ sign is important!
As you can see, it worked for me, and it's standard sed.
# 5  
Old 02-24-2013
here is the command I am using.
echo $t| sed '$ s:and::'
here is the out from $t
on a.id1 = b.id1 and
on a.id2 = b.id2 and
on a.id3 = b.id3 and

Thanks
# 6  
Old 02-24-2013
PLEASE use code tags for code and data as required by forum rules!

Do I see a trailing empty line in the output of $t? The script is removing the "and" from that empty line.
# 7  
Old 02-24-2013
no trailing empty line in the output of $t
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