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How to search file text for a pattern and replace it with a given value
...you don't care about file system permissions (either you're not running as root, or you're running as root and the file is root owned):
#!/usr/bin/env ruby
require 'tempfile'
def file_edit(filename, regexp, replacement)
Tempfile.open(".#{File.basename(filename)}", File.dirname(filename)) do |tem...
How to list running screen sessions?
...ntle ~ # ls -laR /var/run/screen/
/var/run/screen/:
total 1
drwxrwxr-x 4 root utmp 96 Mar 1 2005 .
drwxr-xr-x 10 root root 840 Feb 1 03:10 ..
drwx------ 2 josh users 88 Jan 13 11:33 S-josh
drwx------ 2 root root 48 Feb 11 10:50 S-root
/var/run/screen/S-josh:
total 0
drwx------ 2 josh u...
“use database_name” command in PostgreSQL
...
If I'm not mistaken, databases in MySQL are more akin to schemas in PostgreSQL -- you can switch between those, but DBs in PostgreSQL are a whole different ballgame.
– mpen
May 10 '12 at 3:40
...
Nginx — static file serving confusion with root & alias
...nswers to my confusions.
There is a very important difference between the root and the alias directives. This difference exists in the way the path specified in the root or the alias is processed.
In case of the root directive, full path is appended to the root including the location part, whereas...
Django FileField with upload_to determined at runtime
...g to set up my uploads so that if user joe uploads a file it goes to MEDIA_ROOT/joe as opposed to having everyone's files go to MEDIA_ROOT. The problem is I don't know how to define this in the model. Here is how it currently looks:
...
putting current class as return type annotation [duplicate]
...r type declarations somewhere in the middle of sources...
The problem has roots in recognizing class object before the class was actually defined. That is simply impossible to do in python.
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Glorified classes in the Java language
...ledged status of an enum is include it in a switch statement.
Object - the root of all objects (and I would add its clone and finalize methods are not something you could implement)
References: WeakReference, SoftReference, PhantomReference
Thread - the language doesn't give you a specific instructi...
How do I execute any command editing its file (argument) “in place” using bash?
...reutils so far is sponge(1), which lets you do things like this:
% sed "s/root/toor/" /etc/passwd | grep -v joey | sponge /etc/passwd
However, sponge suffers from the same problem Steve Jessop comments on here. If any of the commands in the pipeline before sponge fail, then the original file wil...
Hibernate throws org.hibernate.AnnotationException: No identifier specified for entity: com..domain.
...er since 2012). The only major database that does not support sequences is MySQL.
The problem with IDENTITY is that automatic Hibernate batch inserts are disabled for this strategy. For more details about this topic, check out this article.
The SEQUENCE strategy is the best choice unless you a...
What is the aspnet_client folder for under the IIS structure?
...ms that the 'prototype' for the contents of the folder is in C:\inetpub\wwwroot\, and it seems reasonable to suppose that if any given IIS website lacks a /aspnet_client resource, then IIS will try to do the right thing and ... as a last resort ... make a physical folder in the web site root folder,...