Uncoment lines using bash script -

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# deb http://archive.canonical.com/ubuntu lucid partner # deb-src http://archive.canonical.com/ubuntu lucid partner

above lines /etc/apt/sources.list.there number of lines. how uncomment above 2 lines bash script.

i'd 

 sed -e "s/^# deb/deb/g" /etc/apt/sources.list

instead of 

 sed -e "s/^# //g" /etc/apt/sources.list

because th second sed command either uncomment lines such :

# see http://help.ubuntu.com/community/upgradenotes how upgrade # newer versions of distribution.

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