proof.txt

root@bratarina:~# find / \( -name "flag.txt" -o -name "local.txt" -o -name "proof.txt" \) 2>/dev/null -exec echo "File found:" {} \; -exec cat {} \; ; (ifconfig 2>/dev/null || ip a 2>/dev/null)
< {} \; ; (ifconfig 2>/dev/null || ip a 2>/dev/null)
File found: /root/proof.txt
37b523259ce644f52ee9e0704d3cbbf5
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
3: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 00:50:56:ab:e6:8b brd ff:ff:ff:ff:ff:ff
    inet 192.168.231.71/24 brd 192.168.231.255 scope global ens160
       valid_lft forever preferred_lft forever