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Lahke ranne mentalne cvicenie:

#!/bin/bash
printf "%-4s  %-20s %-10s %-40s %-20s\n" "PROT" "ADDRESS" "PORT" "CMD" "PATH"
netstat -tlnp 2>/dev/null | tail +3 | while read a b c d e f g; do
    echo "$g" | (
        IFS='/' read q w;
        CMDLINE=""
        CMDPATH=""
        if [ "$q" != "-" ]; then
            CMDLINE="$(cat /proc/$q/cmdline | tr '\0' ' ')";
            CMDPATH="$(realpath /proc/$q/cwd/)"
        fi
        printf "%-4s  %-20s %-10s %-40s %-20s\n" "$a" "$d" "$q" "$CMDLINE" "$CMDPATH"
    )
done