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In Vim, how do I delete everything within the double quotes?
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Also see :help text-objects for other things that work similar to " in this situation.
– Randy Morris
Jan 6 '11 at 21:38
32
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how to view the contents of a .pem certificate
...use the command
openssl x509 -in certificate.pem -text
This should work for any x509 .pem file provided you have openssl installed.
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What is the maximum length of data I can put in a BLOB column in MySQL?
...5 bytes (64 KB) maximum.
If you need more consider using:
a MEDIUMBLOB for 16777215 bytes (16 MB)
a LONGBLOB for 4294967295 bytes (4 GB).
See Storage Requirements for String Types for more info.
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JavaScript Nested function
I got a piece of code for javascript which I just do not understand:
7 Answers
7
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How to convert a LocalDate to an Instant?
... some other date and time libraries, JSR-310 will not select the time-zone for you automatically, so you must provide it.
LocalDate date = LocalDate.now();
Instant instant = date.atStartOfDay(ZoneId.systemDefault()).toInstant();
This example uses the default time-zone of the JVM - ZoneId.systemDe...
How do I show a MySQL warning that just happened?
...pped the connection, then SHOW WARNINGS won't work.
The MySQL manual page for SHOW WARNINGS doesn't indicate any other methods, so I'm fairly certain that you're stuck with it.
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Linq to Entities - SQL “IN” clause
...min", "User", "Limited" }.Contains(u.User_Rights)
select u
foreach(user u in selected)
{
//Do your stuff on each selected user;
}
Method Syntax:
var selected = users.Where(u => new[] { "Admin", "User", "Limited" }.Contains(u.User_Rights));
foreach(user u in selected)
{
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Query a parameter (postgresql.conf setting) like “max_connections”
... not directly available from SHOW, such as minimum
and maximum values.
For your original request:
SELECT *
FROM pg_settings
WHERE name = 'max_connections';
Finally, there is current_setting(), which can be nested in DML statements:
SELECT current_setting('max_connections');
Related:
H...
How to make “if not true condition”?
...ave written).
Also, looking at your code as is, your use of the $( ... ) form of cmd-substitution is to be commended, but think about what is coming out of the process. Try echo $(cat /etc/passwd | grep "sysa") to see what I mean. You can take that further by using the -c (count) option to grep an...
iOS 7's blurred overlay effect using CSS?
...oted, the filter only blurs an element and it's children. It can't be used for an overlay to blur parent elements or adjacent elements, so the iOS 7 effect is not possible with CSS.
– Jason
Jun 14 '13 at 23:01
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