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Easiest way to detect Internet connection on iOS?
...ilityRef address;
address = SCNetworkReachabilityCreateWithName(NULL, "www.apple.com" );
Boolean success = SCNetworkReachabilityGetFlags(address, &flags);
CFRelease(address);
bool canReach = success
&& !(flags & kSCNetworkReachabilityFlagsConnecti...
How to do a recursive find/replace of a string with awk or sed?
...
find /home/www \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i 's/subdomainA\.example\.com/subdomainB.example.com/g'
-print0 tells find to print each of the results separated by a null character, rather than a new...
How do I purge a linux mail box with huge number of emails? [closed]
...he emails received on this email, leaving others intact. deleting the /var/www/username will delete all, right?
– anjan
Aug 16 '11 at 9:43
3
...
Run a PostgreSQL .sql file using command line arguments
...et the PGPASSWORD environment variable. For details see the manual: http://www.postgresql.org/docs/current/static/libpq-envars.html
Use a .pgpass file to store the password. For details see the manual: http://www.postgresql.org/docs/current/static/libpq-pgpass.html
Use "trust authentication" for tha...
Change a Rails application to production
...erver (CentOS 6, but it should apply to nearly all Linux flavors): https://www.digitalocean.com/community/tutorials/how-to-setup-a-rails-4-app-with-apache-and-passenger-on-centos-6
Make absolute certain that after Passenger is set up you've edited the /etc/httpd/conf/httpd.conf file to reflect your ...
AWK: Access captured group from line pattern
...
You can use GNU awk:
$ cat hta
RewriteCond %{HTTP_HOST} !^www\.mysite\.net$
RewriteRule (.*) http://www.mysite.net/$1 [R=301,L]
$ gawk 'match($0, /.*(http.*?)\$/, m) { print m[1]; }' < hta
http://www.mysite.net/
...
Using the rJava package on Win7 64 bit with R
... versions do not work! Mirrors are not up-to-date, so go to the source at www.rforge.net: http://www.rforge.net/rJava/files/. Note the advice there
“Please use
`install.packages('rJava',,'http://www.rforge.net/')`
to install.”
That is almost correct. This actually works:
install.packages(...
MySQL Insert into multiple tables? (Database normalization?)
...(userid, bio, homepage)
VALUES(LAST_INSERT_ID(),'Hello world!', 'http://www.stackoverflow.com');
COMMIT;
Have a look at LAST_INSERT_ID() to reuse autoincrement values.
Edit: you said "After all this time trying to figure it out, it still doesn't work. Can't I simply put the just generated ID i...
Isn't it silly that a tiny favicon requires yet another HTTP request? How can I put the favicon into
...enting the solution yourself:
Here's a simple SVG:
<svg
xmlns="http://www.w3.org/2000/svg"
viewBox="0 0 16 16">
<text x="0" y="14">????</text>
</svg>
And here's the same SVG as a Data URI:
data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200...
How to send PUT, DELETE HTTP request in HttpURLConnection?
...
To perform an HTTP PUT:
URL url = new URL("http://www.example.com/resource");
HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();
httpCon.setDoOutput(true);
httpCon.setRequestMethod("PUT");
OutputStreamWriter out = new OutputStreamWriter(
httpCon.getOut...