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psql: FATAL: database “” does not exist
...eate new User: createuser --interactive
When prompted for role name, enter linux username, and select Yes to superuser question.
Still logged in as postgres user, create a database: createdb <username_from_step_3>
Confirm error(s) are gone by entering: psql at the command prompt.
Output should...
How to get a thread and heap dump of a Java process on Windows that's not running in a console
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On my linux Ctrl-C interrupts (terminates) it, I do Ctrl-\
– nafg
Aug 27 '14 at 1:32
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NGINX: upstream timed out (110: Connection timed out) while reading response header from upstream
...e in this post saying it's required for WebSockets: serverlab.ca/tutorials/linux/web-servers-linux/…
– Almund
Jun 20 at 6:14
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Running a specific test case in Django when your app has a tests directory
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Checkout django-nose. It allows you to specify tests to run like:
python manage.py test another.test:TestCase.test_method
or as noted in comments, use the syntax:
python manage.py test another.test.TestCase.test_method
...
Freeze screen in chrome debugger / DevTools panel for popover inspection?
...cedure:
Browse to the desired page
Open the dev console - F12 on Windows/Linux or option + ⌘ + J on macOS
Select the Sources tab in chrome inspector
In the web browser window, hover over the desired element to initiate the popover
Hit F8 on Windows/Linux (or fn + F8 on macOS) while the popover i...
What is the syntax rule for having trailing commas in tuple definitions?
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It's optional: see the Python wiki.
Summary: single-element tuples need a trailing comma, but it's optional for multiple-element tuples.
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How can I remove an element from a list?
... interest=c("reading","music","movies"),
lang=list(r=2,csharp=4,python=3)),
p2=list(name="James",age=25,
interest=c("sports","music"),
lang=list(r=3,java=2,cpp=5)),
p3=list(name="Penny",age=24,
interest=c("movies","reading"),
lang=list(r=1,cpp=4,python=2)))...
Shell - How to find directory of some command?
...or if it is a built-in command, using the where command e.g.:
tcsh% where python
/usr/local/bin/python
/usr/bin/python
tcsh% where cd
cd is a shell built-in
/usr/bin/cd
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Working with huge files in VIM
...e interface (including an ex mode?).
I'm sure I've seen other editors for Linux/UNIX that were able to page through files without loading their entirety into memory. However, I don't recall any of their names. I'm making this response a "wiki" entry to encourage others to add their links to such ...
Renaming files in a folder to sequential numbers
...adding which are things the OP specified. However, it should be noted that Linux/Unix don't store a creation date.
– Paused until further notice.
Jul 9 '10 at 13:50
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