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How can I get around MySQL Errcode 13 with SELECT INTO OUTFILE?
... $ mkdir bkptest
tmp $ mysqldump -u root -T bkptest bkptest
mysqldump: Got error: 1: Can't create/write to file '/Users/username/tmp/bkptest/people.txt' (Errcode: 13) when executing 'SELECT INTO OUTFILE'
tmp $ chmod a+rwx bkptest/
tmp $ mysqldump -u root -T bkptest bkptest
tmp $ ls bkptest/
people.s...
Internet Explorer's CSS rules limits
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Thank you for the script. It helped me debug a different error
– Jdahern
May 6 '14 at 22:56
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Postgresql - unable to drop database because of some auto connections to DB
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Whenever I try to drop database I get:
ERROR: database "pilot" is being accessed by other users
DETAIL: There is 1 other session using the database.
First You need to revoke
REVOKE CONNECT ON DATABASE TARGET_DB FROM public;
Then use:
SELECT pg_terminate_ba...
Iterate over a list of files with spaces
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Seems like pointing out the obvious, but in nearly all simple cases, -exec is going to be cleaner than an explicit loop: find . -iname "foo*" -exec echo "File found: {}" \;. Plus, in many cases you can replace that last \; with+ to put lots of files in the one command.
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Finding differences between elements of a list
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Actually simply list(map(operator.sub, t[1:], t[:-1])) will do.
– blhsing
Aug 6 '18 at 15:24
add a comme...
Using OR in SQLAlchemy
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From the tutorial:
from sqlalchemy import or_
filter(or_(User.name == 'ed', User.name == 'wendy'))
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Getting “Warning! PATH is not properly set up” when doing rvm use 2.0.0 --default
...m with
rvm implode
then after reinstalling rvm it received the same error message.
After looking through wayne seguin's git hub page. He lists tools on his page and recommended using
rvm reset
after an installation. This fixed my error message. No PATH edits needed.
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How to use Elasticsearch with MongoDB?
... instance.
Make sure everything is up to date.
sudo apt-get update
Install NodeJS.
sudo apt-get install nodejs
sudo apt-get install npm
Install MongoDB - These steps are straight from MongoDB docs.
Choose whatever version you're comfortable with. I'm sticking with v2.4.9 because it seems to b...
Recursion or Iteration?
...n if the recursive function is tail recursive (the last line is recursive call). Tail recursion should be recognized by the compiler and optimized to its iterative counterpart (while maintaining the concise, clear implementation you have in your code).
I would write the algorithm in the way that m...
Why am I getting “undefined reference to sqrt” error even though I include math.h header? [duplicate
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This is a likely a linker error.
Add the -lm switch to specify that you want to link against the standard C math library (libm) which has the definition for those functions (the header just has the declaration for them - worth looking up the differenc...