Get all ip addresses on file

sezen.sh

#!/usr/bin/env bash
# Credits
# https://stackoverflow.com/questions/427979/how-do-you-extract-ip-addresses-from-files-using-a-regex-in-a-linux-shell

file=$1
seperator=${2:-'\n'}

result=$(grep -E -o '(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)' $file)

for ip in $result; do
  echo -e "${ip}$seperator\c"
done
echo

### Usage
# $ sezen <file> [seperator]
# $ sezen dirty-file.txt
# 10.250.200.1
# 10.250.200.2
# $ sezen dirty-file.txt ','
# 10.250.200.1,10.250.200.2

candan.sh

#!/usr/bin/env bash
file=$1

grep -E -o '(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)' $file

Usage

$ candan dirty-file.txt | xargs printf "%s,"
$ candan dirty-file.txt | xargs printf "%s\n"