Grep only IP addresses

How to grep to display only IP addresses ?


grep -Eo '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'

Comments

Post a Comment

Popular posts from this blog

Securing the Pi-hole with fail2ban to prevent DNS Amplification attacks

Securing the Pi-hole with fail2ban to prevent DNS Amplification attacks   1. Install fail2ban  sudo apt-get update ; sudo apt-get install fail2ban 2. create jail file vi /etc/fail2ban/jail.d/pihole-dns.conf [pihole-dns] enabled = true port     = 53 action   = %(banaction)s[name=%(__name__)s-tcp, port="%(port)s", protocol="tcp", chain="%(chain)s", actname=%(banaction)s-tcp]            %(banaction)s[name=%(__name__)s-udp, port="%(port)s", protocol="udp", chain="%(chain)s", actname=%(banaction)s-udp] logpath = /var/log/pihole.log findtime = 60 maxretry = 5 bantime = 3600   3. create filter file vi /etc/fail2ban/filter.d/pihole-dns.conf # Fail2Ban configuration file # # script from www.marek.tokyo # [INCLUDES] # Read common prefixes. If any customizations available -- read them from # common.local before = common.conf [Definition] _daemon = dnsmasq #...
Read more

Reduce (shrink) and resize raw disk at Proxmox

 Reduce (shrink) and resize raw disk at Proxmox 1. Check the status of raw disk:   #e2fsck -fy /hdd-img/images/111/vm-111-disk-1.raw e2fsck 1.46.5 (30-Dec-2021) Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information /hdd-img/images/111/vm-111-disk-1.raw: 135279/327680000 files (1.8% non-contiguous), 857599886/1310720000 blocks  2. At first, check raw disk size:   #qemu-img info /hdd-img/images/111/vm-111-disk-1.raw image: /hdd-img/images/111/vm-111-disk-1.raw file format: raw virtual size: 4.88 TiB (5368709120000 bytes) disk size: 3.59 TiB  3. Resize filesystem: -M - will resize to the minimum size based on saved files -p - will display progress bar #resize2fs -M -p /hdd-img/images/111/vm-111-disk-1.raw resize2fs 1.46.5 (30-Dec-2021) Resizing the filesystem on /hdd-img/images/111/vm-111-disk-1.raw to 852166716 (4k) blocks....
Read more

Wazuh opensearch dashboard ConnectionError: connect ECONNREFUSED ::1:9200"

 Wazuh opensearch dashboard ConnectionError: connect ECONNREFUSED ::1:9200"    If you see error like this:  Aug 19 13:38:21 wazuh opensearch-dashboards[486]: {"type":"log","@timestamp":"2024-08-19T04:38:21Z","tags":["error","opensearch","data"],"pid":486,"message":"[ConnectionError]: connect ECONNREFUSED ::1:9200"} the problem is with missing host localhost IP at: (default is IPv6 and deamon is not listening on it) /etc/wazuh-dashboard/opensearch_dashboards.yml  opensearch.hosts: https://127.0.0.1:9200 #opensearch.hosts: https://localhost:9200
Read more