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What happens when a computer program runs?
...-+
| stack | function-local variables, return addresses, return values, etc.
| | often grows downward, commonly accessed via "push" and "pop" (but can be
| | accessed randomly, as well; disassemble a program to see)
+---------+
| shared | mapped shared libraries (C libraries, ...
Inline comments for Bash?
...t your comment here` \
def `#another chance for a comment` \
xyz etc
And for pipelines specifically, there is a cleaner solution with no overhead
echo abc | # normal comment OK here
tr a-z A-Z | # another normal comment OK here
sort | # the pipelines are autom...
Where do I put image files, css, js, etc. in Codeigniter?
...application outside your documentroot,(public_html, htdocs, public, www... etc)
Inside your public folder, you should put your public info, what the browsers can see, its common to find the folders: images, js, css; so your structure will be:
|- system/
|- application/
|---- models/
|---- views/
|...
Find out what process registered a global hotkey? (Windows API)
...his case, it's tinkering with them for fun, changing left cursor to right, etc. A simple app then calls the DLL and reports back its results based on a TTimer event. If you're interested I can post the Delphi 2007 based code.
It's well documented and commented and you potentially could use it as a ...
How to add /usr/local/bin in $PATH on Mac
...on OS X are built using /usr/libexec/path_helper, called from the default /etc/profile. Start at man path_helper then add your paths in files in /etc/paths.d. You will find that pretty much every path setting example from other OSs includes $PATH because none of them seem to be able to commit to bei...
Practical non-image based CAPTCHA approaches?
... VERSION THAT WORKS WITHOUT JAVASCRIPT How about if you did this with ASP, etc. and had a timestamp for when the form page was loaded and then compared that to the time when the form was submitted. If ElapsedTime<10 sec then it's likely spam.
– Clay Nichols
...
How do I daemonize an arbitrary script in unix?
...buntu or another distro that doesn't use standard init (i.e., doesn't use /etc/inittab), you will need to use the pre-installed inittab as a base for arranging svscanboot to be called by init. It's not hard, but you need to know how to configure the init that your OS uses.
svscanboot is a script tha...
data.table vs dplyr: can one do something well the other can't or does poorly?
...ll become a column in result. You can use c(), as.list(), lapply(), list() etc... base functions to accomplish this, without having to learn any new functions.
You will need to learn just the special variables - .N and .SD at least. The equivalent in dplyr are n() and .
Joins
dplyr provides s...
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'
...running, then you need to check the config files.
The config files are:
/etc/my.cnf
/etc/mysql/my.cnf
/var/lib/mysql/my.cnf
In /etc/my.cnf, the socket file config may be /tmp/mysql.sock and in /etc/mysql/my.cnf the socket file config may be /var/run/mysqld/mysqld.sock. So, remove or rename /etc/...
Changing MongoDB data store directory
...or CentOS/Fedora) ship with a basic configuration file which is placed in /etc/mongodb.conf, and the MongoDB service reads this when it starts up. You could make your change here.
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