elvish_config/aliases/adguard.elv

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edit:add-var adguard~ {|@argv|
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use str
sudo chattr -i /etc/resolv.conf
var beg = 's|^.*\(192\.168\.0\.25\)|'
var end = 'nameserver \1|'
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if (and (> (count $argv) 0) (str:has-prefix $argv[0] u)) {
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set end = '# '$end
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}
sudo sed -i $beg$end /etc/resolv.conf
sudo chattr +i /etc/resolv.conf
}