echo:ai:d79fc

echo "613 261225" | sed -r 's/[[:digit:]]{3}/contact # &/'

echo

$ echo '613 261225' | sed -r 's/${[:digit:}]{3}/contact # &/'

try on your machine

This command will take the input '613 261225' and replace any 3 digit number with 'contact # '. The output will be 'contact # 613 contact # 261225'.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

Questions that are answered by this command:

echo "613 261225" | sed -r 's/[[:digit:]]{3}/contact # &/'?

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