Use this command to redirect ip address to localhost in os x. Not sure if it will work in other os.
ifconfig lo0 alias 10.0.0.1 will redirect 10.0.0.1 to the localhost / loopback adapter
ifconfig lo0 -alias 10.0.0.1 will remove it
copied from http://iphoneincubator.com/blog/debugging/the-evolution-of-a-replacement-for-nslog
basically just put these code into your precompiled header file:
// DLog is almost a drop-in replacement for NSLog // DLog(); // DLog(@"here"); // DLog(@"value: %d", x); // Unfortunately this doesn't work DLog(aStringVariable); you have to do this instead DLog(@"%@", aStringVariable); #ifdef DEBUG # define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__); #else # define DLog(...) #endif // ALog always displays output regardless of the DEBUG setting #define ALog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
you might need to add this flags to the project:
OTHER_CFLAGS = -DDEBUG
GCC_PREFIX_HEADER = YourProject_Prefix.pch # this is needed especially for static library
Lately I have been having problem with slow DNS lookup while browsing. You can see it when I browse, it took some time in the “looking up for youtube.com …” for example.
I googled around and tried several solutions as suggested by others.
All of those doesn’t seem to fix my problem. I tried the DNS Performance Test and it looks like it is ok, not too fast, but not too slow either; but even though DPT is running correctly, I still see that annoying problem.
I saw there was a suggestion on turning on local DNS server from macosxhints.
I followed it, and it works very good in my case, it fixes all my problems, and now I can browse very fast. There are several things that tripped me when I was installing this, so this is my notes for other brave enough to follow the direction.
Notes :
I hope this helps other who have the same problem like me.
I am collecting several useful mercurial tricks for me :
- See diffs when committing in vim
see : http://www.selenic.com/mercurial/wiki/index.cgi/DiffsInCommitMessageInVIM
but instead of using the instruction as is, I have to modify the string a little bit to work in my mac:
what I did is replacing :
$EDITOR "$HGTMP/msg" "$HGTMP/diff" || exit $?
with
vim "+e $HGTMP/diff" '+set nobl buftype=help filetype=diff' "+vsplit $HGTMP/msg"
I’ll add more tricks later if I find any
In a lapse of judgment, I set my hard drive permission to disable readonly for all user, except myself & admin (Using hard drive get info – sharing & permission ). The reasoning was because I can see my root when I enable wireless sharing.
It turned out to be a very bad decision though, my computer won’t boot up anymore. Luckily, I found some helps in the internet.
* first go into single user mode (by pressing command-s during bootup
* mount -a
* mount -uw
* chmod 755 /
* halt
and then restart your computer.
I hope it will fix your problem.
Tags: macpermission problem
I am missing batch renaming functionality that I used to have in windows -> “ren *.xxx *.xxx.orig” in my macbook. But using utility “mmv”, I finally can do the same in mac & windows.
You can download the utility from here :
http://www.joel.lopes-da-silva.com/articles/computer-science-technology/62-tips-tricks/79-mmv-under-mac-os-x-leopard-for-mac-intel.html
some example usage :
http://debaday.debian.net/2007/06/13/mmv-mass-moving-and-renaming-files/
Sometimes I got problem settings breakpoints. I found this solution in apple discussions:
x
As saggymac said:
“The default setting for debugging libraries and frameworks is Load Symbols Lazily. On occasion this causes breakpoints to not be hit. Turning off this setting makes it take longer to start debugging, but hits breakpoints more reliably.”
may be you should set this option OFF… (XCode-Preferences-Debugging)
Tags: xcodedebug breakpoints
yep, was the same here.
once eagerly loaded, the breakpoints would work
Thank you for the solution so much! Before I couldn’t force Xcode to stop on breakpoints while running my iPhone app on Simulator.
I am trying to compile a simple command line for experiment, and it is somehow not as obvious as I thought.
Here is a the very simple program I copied somewhere from internet
Raphae Halim is discussing. 
Murad Juraev, and 
#import <Foundation/foundation.h>
int main( int argc, const char* argv[])
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSObject *object = [[NSObject alloc] init];
NSLog(@"Created Object: %@", object);
[pool release];
return 0;
}
and here is how to compile it :
gcc main.m -o main -ObjC -framework Foundation
setting “-framework Foundation” is the one that threw me off. I couldn’t find it anywhere !
First, to install nginx do this :
sudo port install nginx
then use this configuration – this is only for testing, with setting for my os x (for access log / pids). It also use proxy to merb
# nginx using macports installation
# for my local testing
user kusno staff;
worker_processes 1;
pid /opt/local/var/run/nginx.pid;
error_log /opt/local/var/log/nginx/error.log info;
events {
worker_connections 16;
}
http {
include etc/nginx/mime.types;
default_type application/octet-stream;
access_log /opt/local/var/log/nginx/access.log;
sendfile on;
#tcp_nopush on;
keepalive_timeout 65;
tcp_nodelay on;
gzip on;
gzip_min_length 1100;
gzip_buffers 4 8k;
gzip_types text/plain;
client_max_body_size 100m;
upstream merb {
server 127.0.0.1:4000;
}
server {
listen 80;
server_name localhost;
root /Users/kusno/ezify/public;
index index.html index.htm;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_redirect false;
#if (-f $request_filename/index.html) {
# rewrite (.*) $1/index.html break;
#}
#if (-f $request_filename.html) {
# rewrite (.*) $1.html break;
#}
if (-f $request_filename) {
rewrite (.*) $1 break;
}
if (!-f $request_filename) {
proxy_pass http://merb;
break;
}
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}
use this to restart nginx :
sudo launchctl stop org.macports.nginx sudo launchctl start org.macports.nginx
Tags: nginx
Put :
$DB::single=2;
to enable breakpoint in the code. Don’t forget to run with -d
Tags: perldebug
Raphae Halim 6:55 pm on August 29, 2009 Permalink
Hey, thanks for your post. I wanted to improve my network performance. I found the same article but didn’t know if it would work well on Leopard. You article gave me the confidence to try it out.