Parse freeswitch log for DTMF codes and output a single string

dtmf_getter.sh

#!/bin/bash

LOGFILE="/var/log/freeswitch/freeswitch.log*"
#LOGFILE="/usr/local/freeswitch/log/freeswitch.log*"
USER="centos"
REMOTE_ADDR="${1:?ERROR: No remote address provided}"
UUID="${2:?ERROR: No UUID provided}"

get_logs() {
  "$SUDO" find "${LOGFILE%/*}" -type f -name "${LOGFILE##*/}" ! -empty
}

dtmf_extract() {
  awk -F'[: ]' 'BEGIN{ ORS="" } /RTP RECV DTMF/ && /'$UUID'/ { print $12 }'
}

ssh -qtt "${USER}@${REMOTE_ADDR}" \
  "
    # set -x;
    LOGFILE=\"$LOGFILE\";
    UUID=\"$UUID\";
    SUDO=\"\$(command -v sudo)\";
    $(typeset -f dtmf_extract get_logs);
    \$SUDO zcat -f \$(get_logs) | dtmf_extract;
  "