vincent zhangw
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| # /etc/security/limits.conf | |
| * soft nofile 999999 | |
| * hard nofile 999999 | |
| root soft nofile 999999 | |
| root hard nofile 999999 | |
| =========================================================== | |
| # /etc/sysctl.conf | |
| # sysctl for maximum tuning |
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| var crypto = require('crypto'); | |
| var SaltLength = 9; | |
| function createHash(password) { | |
| var salt = generateSalt(SaltLength); | |
| var hash = md5(password + salt); | |
| return salt + hash; | |
| } |
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| /* Original source code courtesy John from iOSDeveloperTips.com */ | |
| #include <sys/socket.h> | |
| #include <sys/sysctl.h> | |
| #include <net/if.h> | |
| #include <net/if_dl.h> | |
| + (NSString *)getMacAddress | |
| { | |
| int mgmtInfoBase[6]; |
kinopyo
/ gist:2426829
Created
April 20, 2012 07:23
Ruby: Get module name or class name without module
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| n = Notification::Answer.new | |
| n.class.name.split('::').last || '' | |
| # => "Answer" | |
| n.class.name.split('::').first || '' | |
| # => "Notification" |
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| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <string.h> | |
| /* | |
| * MCrypt API available online: | |
| * http://linux.die.net/man/3/mcrypt | |
| */ | |
| #include <mcrypt.h> |
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| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
adamawolf
/ Apple_mobile_device_types.txt
Last active
January 7, 2026 04:40
List of Apple's mobile device codes types a.k.a. machine ids (e.g. `iPhone1,1`, `Watch1,1`, etc.) and their matching product names
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| i386 : iPhone Simulator | |
| x86_64 : iPhone Simulator | |
| arm64 : iPhone Simulator | |
| iPhone1,1 : iPhone | |
| iPhone1,2 : iPhone 3G | |
| iPhone2,1 : iPhone 3GS | |
| iPhone3,1 : iPhone 4 | |
| iPhone3,2 : iPhone 4 GSM Rev A | |
| iPhone3,3 : iPhone 4 CDMA | |
| iPhone4,1 : iPhone 4S |
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| # Configuration file for runtime kernel parameters. | |
| # See sysctl.conf(5) for more information. | |
| # See also http://www.nateware.com/linux-network-tuning-for-2013.html for | |
| # an explanation about some of these parameters, and instructions for | |
| # a few other tweaks outside this file. | |
| # | |
| # See also: https://gist.github.com/kgriffs/4027835 | |
| # | |
| # Assumes a beefy machine with lots of network bandwidth |
gradetwo
/ GFWDetector.py
Created
January 23, 2013 07:00
Use special domains (eg. twitter.com) to trigger GFW DNS Poisoning, detecting it's deployment by incr TTL
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| #!/usr/bin/env python | |
| import logging | |
| from scapy.all import * | |
| logging.getLogger("scapy.runtime").setLevel(logging.ERROR) | |
| fakeip = ["4.36.66.178", "8.7.198.45", "37.61.54.158", "46.82.174.68", "59.24.3.173", "64.33.88.161", "64.33.99.47", "64.66.163.251", "65.104.202.252", "65.160.219.113", "66.45.252.237", "72.14.205.104", "72.14.205.99", "78.16.49.15", "93.46.8.89", "128.121.126.139", "159.106.121.75", "169.132.13.103", "192.67.198.6", "202.106.1.2", "202.181.7.85", "203.161.230.171", "207.12.88.98", "208.56.31.43", "209.145.54.50", "209.220.30.174", "209.36.73.33", "211.94.66.147", "213.169.251.35", "216.221.188.182", "216.234.179.13"] | |
| testdomain = ["twitter.com", "facebook.com", "youtube.com"] | |
| dnshost = "8.8.8.8" | |
| for h in testdomain: |
zhangw
/ GFWDetector.py
Created
January 30, 2013 07:03
— forked from gradetwo/GFWDetector.py
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| #!/usr/bin/env python | |
| import logging | |
| from scapy.all import * | |
| logging.getLogger("scapy.runtime").setLevel(logging.ERROR) | |
| fakeip = ["4.36.66.178", "8.7.198.45", "37.61.54.158", "46.82.174.68", "59.24.3.173", "64.33.88.161", "64.33.99.47", "64.66.163.251", "65.104.202.252", "65.160.219.113", "66.45.252.237", "72.14.205.104", "72.14.205.99", "78.16.49.15", "93.46.8.89", "128.121.126.139", "159.106.121.75", "169.132.13.103", "192.67.198.6", "202.106.1.2", "202.181.7.85", "203.161.230.171", "207.12.88.98", "208.56.31.43", "209.145.54.50", "209.220.30.174", "209.36.73.33", "211.94.66.147", "213.169.251.35", "216.221.188.182", "216.234.179.13"] | |
| testdomain = ["twitter.com", "facebook.com", "youtube.com"] | |
| dnshost = "8.8.8.8" | |
| for h in testdomain: |
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