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See what process is using a file in Mac OS X
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fs_usage should be runned as root... it's not the best solution.
– bontoJR
Nov 1 '13 at 8:36
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RVM is not working in ZSH
.../usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/git/bin:/usr/local/mysql/bin:/opt/local/bin"
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How do I increase the number of displayed lines of a Java stack trace dump?
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The causes are displayed from the most nested one at the bottom (the "root cause"), to the one which the printed stack trace belongs to.
In this case the root cause is LowLevelException, which caused MidLevelException, which caused HighLevelException.
To get the complete stack trace you have ...
How do I insert datetime value into a SQLite database?
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Use CURRENT_TIMESTAMP when you need it, instead OF NOW() (which is MySQL)
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Stash only one file out of multiple files that have changed with Git?
...bar.txt. The patch generates OK, but I then need to move to the repository root to get the patch to apply. So if you're having trouble with this - just make sure you're doing it from the repository root directory.
– Michael Anderson
Jun 3 '16 at 6:23
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Heroku Postgres - terminate hung query (idle in transaction)
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select pg_terminate_backend(1234);
If you have shell access and root or postgres permissions you can also do it from the shell. To "cancel" one can do:
kill -INT 1234
and to "terminate", simply:
kill 1234
DO NOT:
kill -9 1234
... that will often result in the the whole postgres ...
How to customize a requirements.txt for multiple environments?
...equirements into a modular folder hierarchy like this:
`-- django_project_root
|-- requirements
| |-- common.txt
| |-- dev.txt
| `-- prod.txt
`-- requirements.txt
The files' contents would look like this:
common.txt:
# Contains requirements common to all environments
req1==1.0
req2==1.0
r...
How to get an array of specific “key” in multidimensional array without looping
Let's assume I have the following multidimensional array (retrieved from MySQL or a service):
4 Answers
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Simulate CREATE DATABASE IF NOT EXISTS for PostgreSQL?
I want to create a database which does not exist through JDBC. Unlike MySQL, PostgreSQL does not support create if not exists syntax. What is the best way to accomplish this?
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Most efficient conversion of ResultSet to JSON?
...rd with the reading. I think Oracle cursor are server side by default. For MySQL > 5.0.2 look for useCursorFetch at connection url paramenter. Check about your favourite DBMS.
1: So to use less memory we must:
use server side cursor behind the scene
use resultset open as read only and, of cour...