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find port without ss/netstat in container

Impossible Iguana answered on January 2, 2024 Popularity 1/10 Helpfulness 1/10

answer find port without ss/netstat in container

find port without ss/netstat in container

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cat << 'EOF' > parse_net.sh
#!/bin/bash

pid="<container-pid>"

# Check if the /proc/<PID>/net directory exists
net_dir="/proc/$pid/net"
if [ ! -d "$net_dir" ]; then
    echo "Error: /proc/$pid/net directory not found."
    exit 1
fi

# Function to convert hexadecimal to decimal
hex_to_dec() {
    echo $((16#$1))
}

# Function to convert IP from hexadecimal to standard decimal format
hex_ip_to_dec() {
    printf "%d.%d.%d.%d" $(hex_to_dec ${1:6:2}) $(hex_to_dec ${1:4:2}) $(hex_to_dec ${1:2:2}) $(hex_to_dec ${1:0:2})
}

# Function to parse and display local addresses from tcp and udp files
parse_net_file() {
    protocol=$1
    net_file="$net_dir/$protocol"
    
    if [ ! -f "$net_file" ]; then
        echo "Error: $protocol file not found in $net_dir."
        return
    fi

    echo "Local Addresses for $protocol connections:"
    awk 'NR>1 {print $2}' "$net_file" | while read -r local_address; do
        ip_hex=$(echo $local_address | cut -d: -f1)
        port_hex=$(echo $local_address | cut -d: -f2)
        ip_dec=$(hex_ip_to_dec $ip_hex)
        port_dec=$(hex_to_dec $port_hex)
        echo "IP: $ip_dec, Port: $port_dec"
    done
}

# Parse and display local addresses for tcp and udp connections
parse_net_file "tcp"
parse_net_file "udp"
EOF

Popularity 1/10 Helpfulness 1/10 Language shell

Source: chat.openai.com

Tags: find port shell

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Contributed on Jan 02 2024

Impossible Iguana

0 Answers Avg Quality 2/10

find port without ss/netstat in container

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