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Kill a postgresql session/connection
... pg_backend_pid()
-- don't kill the connections to other databases
AND datname = 'database_name'
;
Before executing this query, you have to REVOKE the CONNECT privileges to avoid new connections:
REVOKE CONNECT ON DATABASE dbname FROM PUBLIC, username;
If you're using Postgres 8....
What is the argument for printf that formats a long?
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On most platforms, long and int are the same size (32 bits). Still, it does have its own format specifier:
long n;
unsigned long un;
printf("%ld", n); // signed
printf("%lu", un); // unsigned
For 64 bits, you'd want a long long:
long long n;
uns...
What is a pre-revprop-change hook in SVN, and how do I create it?
I wanted to edit a log comment in the repository browser and received an error message that no pre-revprop-change hook exists for the repository. Besides having a scary name, what is a pre-revprop-change hook, and how do I create it?
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Disable browser's back button
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Do not disable expected browser behaviour.
Make your pages handle the possibility of users going back a page or two; don't try to cripple their software.
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How to enter quotes in a Java string?
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\ = \\
" = \"
new line = \r\n OR \n\r OR \n (depends on OS) bun usualy \n enough.
taabulator = \t
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How to uninstall Jenkins?
...an't find any hint anywhere. So how one is supposed to do that, in general and specifically on Mac?
8 Answers
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Is there a command like “watch” or “inotifywait” on the Mac?
I want to watch a folder on my Mac (Snow Leopard) and then execute a script (giving it the filename of what was just moved into a folder (as a parameter... x.sh "filename")).
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Python pip install fails: invalid command egg_info
... edited Jun 5 '14 at 10:33
evandrix
5,36333 gold badges2525 silver badges3232 bronze badges
answered Jul 11 '12 at 5:01
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How to fully delete a git repository created with init?
I created a git repository with git init . I'd like to delete it entirely and init a new one.
13 Answers
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Weak and strong property setter attributes in Objective-C
What is the difference between weak and strong property setter attributes in Objective-C?
5 Answers
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