Dave Wallraff dwallraff

Wartime Consigliere - Puzzle solver - Breaker O’ Things

dwallraff / tmp_ram_disk.sh

Created September 10, 2016 16:49

Mount a temporary RAM disk

mount -t tmpfs tmpfs /mnt -o size=1024m

dwallraff / inspect_ram.sh

Created September 10, 2016 16:51

Look at what's in RAM (linux)

sudo strings /dev/mem

dwallraff / nc_udp.sh

Created September 10, 2016 16:54

Test UDP with netcat

dwallraff / python_tcpdump.py

Last active September 14, 2016 17:10

Use python to tcpump (outputs PCAP)

	#!/usr/bin/env python
	import sys,socket,struct,time
	sys.stdout.write(struct.pack('!IHHIIII',0xa1b2c3d4,2,4,0,0,65535,1))
	s=socket.socket(socket.PF_PACKET, socket.SOCK_RAW, socket.htons(0x3))
	while True:
	t,p=time.time(),s.recvfrom(65535)
	ts=int(t)
	tu=int((t-ts)*1000000)
	sys.stdout.write(struct.pack('!IIII',ts,tu,len(p[0]),len(p[0]))+p[0])

dwallraff / read-only.sh

Created September 10, 2016 16:56

Set Linux filesystem to read-only

echo u > /proc/sysrq-trigger

dwallraff / git_list_commiters.sh

Created September 10, 2016 16:56

Git command to list users and e-mails from a git repo

git log --format="%an %ae" | sort | uniq

dwallraff / ssh_config_proxy_command.md

Created September 10, 2016 16:59

SSH config ProxyCommand

Host internal-*.example.net
  ProxyCommand ssh -T external.example.net 'nc %h %p'

Used to ssh internal-dev.example.net

dwallraff / port_forwarding.md

Last active March 16, 2025 10:40

Add port forwarding to running SSH sessions

Use SSH's escape sequence <enter>~<shift>+c

user@sshhost $ ~C
ssh> L8080:localhost:8080
Forwarding port.

user@sshhost $ ~C
ssh&gt; KL8080

dwallraff / bash_exit_trap.sh

Created September 13, 2016 16:53

Trap EXIT in a bash script

dwallraff / sample_color_output.sh

Created September 13, 2016 17:06

Use `tput` to modify output in bash scripts