Nathans one liners and functions

nmap, fast test of top 5000 ports

nmap -n -sS -sU -PN --max-retries 1 --min-rate 300 --top-ports 5000 my_host

beer symbol

BEER="\xF0\x9F\x8D\xBA"

encypted vim alias

alias vime='vim -X -n -N --cmd "set cm=blowfish" --cmd "set nobackup" --cmd "set nowritebackup" --cmd "set key=`. ~/.my_password_file;echo $whatever`"'    

ssh auto complete

complete -W "$(ls path_to_hosts_dir |uniq )" ssh

Debian Colour PS1

PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '

Kill DNS Cache on OSX

sudo killall -HUP mDNSResponder

Transpose one dimetional CSV

#!/usr/bin/env python
import sys, csv, itertools
rows = itertools.izip(*csv.reader(sys.stdin, delimiter=","))
sys.stdout.writelines(",".join(row) + "\n" for row in rows)

iptables copy packet to destination

iptables -t mangle -A POSTROUTING -d 10.0.0.1 -j TEE --gateway 10.0.0.2

Nginx Key Value Sore (for PNG images)

lua_shared_dict site 100m;
client_body_buffer_size     10M;
client_max_body_size        10M;
server {
    listen       80;
    server_name  my.site.com;
    location /set {
        content_by_lua '
            local site = ngx.shared.site
            ngx.req.read_body()
            local args = ngx.req.get_post_args()
            for key, val in pairs(args) do
                site:set(key, val, 180 )
                ngx.say("OK")
            end
        ';
    }
    location ~ /*.png$ {
        add_header Content-Type "image/png";
        content_by_lua '
            local key = ngx.var.uri:match("/(.+)%..+")
            local site = ngx.shared.site
            ngx.print(ngx.decode_base64(site:get(key)))
        ';
    }
}

ifconfig-nginx

Quick nginx/lua ifconfig implementation

ifconfig.site