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Docker build “Could not resolve 'archive.ubuntu.com'” apt-get fails to install anything
...
Using these addresses, create a file /etc/docker/daemon.json:
$ sudo su root
# cd /etc/docker
# touch daemon.json
Put this in /etc/docker/daemon.json:
{
"dns": ["10.0.0.2", "10.0.0.3"] ...
Error: The 'brew link' step did not complete successfully
...e. The directories of concern were not owned by my username, but owned by "root". I decided to delete those directories and reinstall.
– Coach Roebuck
Mar 12 '14 at 20:24
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Browse orphaned commits in Git
...ommit 7949837, 06 Jul 2016)
reflog: continue walking the reflog past root commits
If a repository contains more than one root commit, then its HEAD reflog may contain multiple "creation events", i.e. entries whose "from" value is the null sha1.
Listing such a reflog currently stops prem...
Inheritance vs. Aggregation [closed]
...e functionality of the original class, is to split the original class in a root class and a sub class. And let the new class inherit from the root class. But you should take care with this, not to create an illogical separation.
Lets add an example. We have a class 'Dog' with methods: 'Eat', 'Walk'...
No serializer found for class org.hibernate.proxy.pojo.javassist.Javassist?
...causes it (it might also be a field in some nested object, not only in the root entity you are fetching).
If do not need the object in JSON, annotate the getter of this field (or the field itself, if you do not need to accept incoming values either) with @JsonIgnore, for example:
// this field wi...
Reference: mod_rewrite, URL rewriting and “pretty links” explained
... to look for a file that matches the URL on the hard disk. If the document root of the server is set to, say, /var/www, it may look whether the file /var/www/foo/bar.html exists and serve it if so. If the file ends in ".php" it will invoke the PHP interpreter and then return the result. All this ass...
What special characters must be escaped in regular expressions?
...lavors (BRE/ERE)
Includes awk, ed, egrep, emacs, GNUlib, grep, PHP (ereg), MySQL, Oracle, R, sed.PCRE support may be enabled in later versions or by using extensions
ERE/awk/egrep/emacs
Outside a character class: . ^ $ * + ? ( ) [ { } \ |
Inside a character class: ^ - [ ]
BRE/ed/grep...
What's the easiest way to install a missing Perl module?
...for installing. This is much safer, since it means that tests don't run as root.
If you have an old CPAN shell, simply install the new cpan ("install CPAN") and when you reload the shell, it should prompt you to configure these new directives.
Nowadays, when I'm on a system with an old CPAN, the f...
A cron job for rails: best practices?
... How do you call this from the console? I did load "#{Rails.root}/lib/tasks/cron.rake" and rake cron, but got NameError: undefined local variable or method `cron' for main:Object
– B Seven
Jul 22 '11 at 15:40
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Should developers have administrator permissions on their PC
...ges to do.
Bearing in mind that development staff do not necessarily have root access to production systems, admin rights on a local PC does not significantly compromise security of production systems. There is almost no legitimate operational reason for restricting admin access to local PCs for s...