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Modify sources.list from script

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# 1  
Old 02-20-2010
Modify sources.list from script

i'm looking for a way to enable and disable repositories from a script.
i started with a sed command like this:
sed '/*'"$REPO"'/,/'"$STOP"'/ s/^[ #]*//' /etc/apt/sources.list

but this enables both the normal and the source repos.
for example:
# deb lenny main
# deb-src lenny main

anybody knows of a way to control just one? e.g. just add/remove the # from the concerning repo line?

all help much appreciated Smilie

ps, sorry if this is in the wrong section.

Last edited by Leppie; 02-20-2010 at 07:37 PM..
# 2  
Old 02-21-2010

What are the contents of the REPO and STOP variables?

Give an example of the sourcelist before and after the substitution.

# 3  
Old 02-21-2010
Hi Franklin52,
thanks for your reply.
what i'm trying to do is commenting or uncommenting specific lines. for instance these repositories:
# deb lenny main
# deb-src lenny main

could be defined by setting the variable REPO to "lamaresh". however, doing so with the current sed command, it will take both lines while i want to be able to control which line get uncommented.
so i'm looking for something that can search for a string and commit a change in the line containing the search string, but skip the line if another search string is present. i hope this is clear?
so for instance, uncomment/comment if "lamaresh" and "deb" are found, but do nothing if "lamaresh" and "src" are found, with a result like this:
deb lenny main
# deb-src lenny main

# 4  
Old 02-21-2010
To uncomment the first line you could do:

REPO="deb "

sed "/^# $REPO/ s/^# //" file

For the second line:


sed "/^# $REPO/ s/^# //" file

If the output is correct you can use the -i option of sed to edit the file "in place".

EDIT: Misunderstand your question, this should be a better approach:
STOP="deb "

sed "/^# $STOP.*$REPRO/ s/^# //" file


sed "/^# $STOP.*$REPRO/ s/^# //" file

Last edited by Franklin52; 02-21-2010 at 12:20 PM..
# 5  
Old 02-21-2010
Frankin52, you're a genius.
i never thought of concatenating the two search terms to narrow down the hits.
thank you very much Smilie
heel erg bedankt, wil je wat bits van mij?
# 6  
Old 02-21-2010
just to give an idea how to do it with awk:

awk '/lamaresh/&&/deb / {print "#"$0}'  FILE
awk '/lamaresh/&&/deb-src/ {print $0}'  FILE

# 7  
Old 02-21-2010
EAGL€, that is working very nicely as well.
i think i have to dig a little deeper into sed and (g)awk Smilie

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