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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...
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...
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 ...
What is 'Pattern Matching' in functional languages?
...ues. In a pseudo-C++ syntax:
enum Shape {
Rectangle of { int left, int top, int width, int height }
Circle of { int x, int y, int radius }
}
A value of type Shape can now contain either Rectangle with all the coordinates or a Circle with the center and the radius. Pattern matching allows you...
Node.js vs .Net performance
...uld be great to have data. That's usually how I decide how to proceed with topics of performance.
– kingPuppy
Feb 13 '15 at 20:59
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show 10 ...
Questions every good .NET developer should be able to answer? [closed]
...ities rather than the sort of thing you can look up and memorise from '101 top .NET interview Qs and As".
Just to cite myself as an example, I tend to 'know' the things I need to use from day to day. I tend to forget (and later have to re-look up) things that I use rarely.
If you wanted to trip m...
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(...
How to send PUT, DELETE HTTP request in HttpURLConnection?
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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...
Hibernate vs JPA vs JDO - pros and cons of each? [closed]
... several years ago for a .NET project; however, I haven't kept up with the topic of ORM in Java and haven't had a chance to use any of these tools.
...