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Re: keeping the two latest files on a folder


On Sun, Oct 18, 2009 at 5:32 AM, Israel Garcia <igalvarez@gmail.com> wrote:
> Hi Guys, that's me again.. I'm stuck again with sed to make a change
> to a file.. sorry if it sounds off-topic.. but I need your help :-).
> I've just want to change on a file this line:
> vif = [ 'ip=167,112,134.223,mac=00:16:3E:FD:58:B8']
> to:
> vif = ['ip=167,112,134.223,mac=00:16:3E:FD:58:B8,vifname=veth216','ip=,mac=00:16:3E:FD:58:BB,vifname=veth216a']
> AND, if it's possible to change tha last two entries of mac address,
> B8 to C8 for example..

sed -i '/^vif/s/B8.*$/C8,vifname=veth216'"'"','"'"'ip=,mac=00:16:3E:FD:58:BB,vifname=veth216a'"'"']'

As it is dificult to read see this explication:
If you want to use a ' inside replace string such is the case you must:
type ' to close string
Then type " to open a new concatenated string
type ' to write '
type " to close the concatenated string
type ' to concatenate the next string (following with the replace string)


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