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Best way to use Google's hosted jQuery, but fall back to my hosted library on Google fail

...: <html> <head> <script type="text/javascript" src="http://www.google.com/jsapi"></script> <script type="text/javascript"> // has the google object loaded? if (window.google && window.google.load) { google.load("jquery", "1.3.2"); } else { document.writ...
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Installing Python 3 on RHEL

...: Download (there may be newer releases on Python.org): $ wget https://www.python.org/ftp/python/3.4.3/Python-3.4.3.tar.xz Unzip $ tar xf Python-3.* $ cd Python-3.* Prepare compilation $ ./configure Build $ make Install $ make install OR if you don't want to overwrite the python execu...
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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...
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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...
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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 ...
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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...
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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 ...
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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/ ...
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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(...
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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...