[rlug] filtrare input - newbie

[Lentila de Vultur]

am un script bash in care utilizatorul introduce o adresa ip. cum pot filtra
input-ul astfel incat sa accept doar cifre shi "."?
ma intereseaza in principiu solutzie bash/awk/sed dar orice idee e
binevenita.
10x

-- 
Lentila de Vultur

"Daca tu nu eshti paranoic nu inseamna ca ei nu te urmaresc."

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