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Best way to create custom config options for my Rails app?
...esn't need to be stored in a database table, I like to create a config.yml file within the config directory. For your example, it might look like this:
defaults: &defaults
audiocast_uri_format: http://blablalba/blabbitybla/yadda
development:
<<: *defaults
test:
<<: *defaults...
Why does the order in which libraries are linked sometimes cause errors in GCC?
...now think it's easier for the reader to see real command lines).
Common files shared by all below commands
$ cat a.cpp
extern int a;
int main() {
return a;
}
$ cat b.cpp
extern int b;
int a = b;
$ cat d.cpp
int b;
Linking to static libraries
$ g++ -c b.cpp -o b.o
$ ar cr libb.a b.o
$ g++ ...
Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
...upports it too). For example, you can do
[[ -e $b ]]
to test whether a file exists. But with [, you have to quote $b, because it splits the argument and expands things like "a*" (where [[ takes it literally). That has also to do with how [ can be an external program and receives its argument jus...
Unable to execute dex: Multiple dex files define
... for me turns out another developer added a new version of a library jar file without deleting the old one. So there were two jars with same classes. Thus the error 'Multiple dex files...' You could do a grep -r 'OffendingClassName' | grep jar$ to search for jar files that contain the class name....
Colors with unix command “watch”?
...man's watch using
while sleep <time>; do <command> > /tmp/file; clear; cat /tmp/file; done
But then you'll hit again the "I am not writing to a terminal" feature.
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Putting git hooks into repository
...ook $HOOK_DIR/$hook.local
fi
# create the symlink, overwriting the file if it exists
# probably the only way this would happen is if you're using an old version of git
# -- back when the sample hooks were not executable, instead of being named ____.sample
ln -s -f ../../bin/hooks...
What is the difference between tar and zip? [closed]
...
tar in itself just bundles files together (the result is called a tarball), while zip applies compression as well.
Usually you use gzip along with tar to compress the resulting tarball, thus achieving similar results as with zip.
For reasonably large a...
Combining node.js and Python
...ou know if something like this will work on Heroku, which has an ephemeral filesystem?
– cm2
Jul 6 '13 at 1:46
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Is there a Unix utility to prepend timestamps to stdin?
... On my system 'awk' itself was buffering. (This can be problematic for log files). I fixed this by using: awk '{ print strftime("%Y-%m-%dT%H:%M:%S"), $0; fflush(); }'
– user47741
Mar 11 '10 at 13:28
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Temporarily disable some plugins using pathogen in vim.
... You could also start vim as vim -u NONE -N and then once inside vim, do :filetype plugin on to enable filetype plugins.
– frabjous
Nov 26 '10 at 5:00
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