#!/bin/bash
s="profile string.www.com { app-service none cert string.www.com_2018_2020.crt cert-key-chain { string.www.com _2018_2020_geotrust_rsa_ca_2018 { cert string.www.com _2018_2020.crt chain geotrust_rsa_ca_2018.crt key string.www.com_2018_2020.key } } chain geotrust_rsa_ca_2018.crt defaults-from default-clientssl inherit-certkeychain false key string.www.com_2018_2020.key passphrase none }"
grep -oP '(profile|defaults-from|passphrase)\s+\K\S+' <<< "$s"

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