tcpdump on all interfaces at one

tcpdump.all.sh

#!/bin/bash
#===================================================================================
#
# FILE: dump.sh
# USAGE: dump.sh [-i interface] [tcpdump-parameters]
# DESCRIPTION: tcpdump on any interface and add the prefix [Interace:xy] in front of the dump data.
# OPTIONS: same as tcpdump
# REQUIREMENTS: tcpdump, sed, ifconfig, kill, awk, grep, posix regex matching
# BUGS:  ---
# FIXED: - In 1.0 The parameter -w would not work without -i parameter as multiple tcpdumps are started.
#        - In 1.1 VLAN's would not be shown if a single interface was dumped.
# NOTES: ---
#        - 1.2 git initial
# AUTHOR: Sebastian Haas
# COMPANY: pharma mall
# VERSION: 1.2
# CREATED: 16.09.2014
# REVISION: 22.09.2014
# REVISION: 06.09.2021 - Stefan Lasiewski - Fixed to support Calico interfaces for Kubernetes/Docker/Containers. Normalize the length of the interface names.
#
#===================================================================================

# When this exits, exit all background processes:
trap 'kill $(jobs -p) &> /dev/null && sleep 0.2 &&  echo ' EXIT
# Create one tcpdump output per interface and add an identifier to the beginning of each line:
if [[ $@ =~ -i[[:space:]]?[^[:space:]]+ ]]; then
    tcpdump -l $@ | sed 's/^/[Interface:'"${BASH_REMATCH[0]:2}"'] /' &
else
    for interface in $(ip link list | grep '^[a-z0-9]' | awk '{print $2}' | sed 's/@...:$//' | sed 's/:$//')
    do
            tcpdump -l -i $interface -nn $@ port 5201 | sed 's/^/[Interface:'"$(echo $interface"    " |cut -c1-10)"']    /' &
    done
fi
# wait .. until CTRL+C
wait