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Can "sed" substitute word on a specific line?

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# 1  
Old 02-14-2008
Can "sed" substitute word on a specific line?
Hello experts,
I know line number of the word I want to replace. Can "sed" substitute word on a specific line?
As well, can sed substitute words inside a specific patten.
ex. <word>lalala</word> #replace anything between <word> and </word>

minifish
# 2  
Old 02-14-2008
1)

sed -e "<line number>s/<search pattern>/<replacement string>/"

e.g. replace on line 4 the word "bike" by "car"

sed -e "4s/bike/car/"

2)
sed -e "s%\(<word>\).*\(</word>\)%\1<replacement string>\2%"
% is used instead of / so the / in front of the 2nd "word" doesnt need to be escaped.

or with /
sed -e "s/\(<word>\).*\(<\/word>\)/\1<replacement string>\2/"
Last edited by sb008; 02-14-2008 at 05:29 PM..
# 3  
Old 02-14-2008
Computer
Quote:
Originally Posted by sb008
1)

sed -e "<line number>s/<search pattern>/<replacement string>/"

e.g. replace on line 4 the word "bike" by "car"

sed -e "4s/bike/car/"

2)
sed -e "s%\(<word>\).*\(</word>\)%\1<replacement string>\2%"
% is used instead of / so the / in front of the 2nd "word" doesnt need to be escaped.

or with /
sed -e "s/\(<word>\).*\(<\/word>\)/<replacement string>\2/"
thank you experSmilieSmilieSmilieSmilieSmilieSmilieSmilieSmilieSmilieSmilie
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