replace words in sed using regular expression

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# 1  
Old 09-26-2009
replace words in sed using regular expression


I need to replace all these lines from my text file


At the moment I know how to replace "end". But I want to replace the numbers before end as well. How can I do this ?

sed s/end/newWord/ myfile.txt newFile.txt

# 2  
Old 09-26-2009
i beleive you have to do it one by one...

sed -e "s/^123/.../" -e "s/^234/.../" ......
# 3  
Old 09-26-2009
sed 's/[0-9]*end//' infile

# 4  
Old 09-26-2009
To delete those lines rather than print empty lines:

sed -e '/^[0-9]\{3\}end$/d' myfile.txt > newFile.txt

awk '!/^[0-9][0-9][0-9]end$/' myfile.txt > newFile.txt

Last edited by Scrutinizer; 09-26-2009 at 07:54 AM..
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