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Setting environment variables via launchd.conf no longer works in OS X Yosemite/El Capitan/macOS Sie
...vironment variables definition:
$ ls -la /etc/environment
-r-xr-xr-x 1 root wheel 369 Oct 21 04:42 /etc/environment
$ cat /etc/environment
#!/bin/sh
set -e
syslog -s -l warn "Set environment variables with /etc/environment $(whoami) - start"
launchctl setenv JAVA_HOME /usr/local/jdk1.7...
How can “while (i == i) ;” be a non-infinite loop in a single threaded application?
...magic value within a calculation. Because a calculation failed - eg square root of a negative, divide by zero etc - it makes no sense in comparing them against anything else. After all if divide by zero is a nan is it equivalent to the square root of -2 or square root of -3 ?
Nan allows a calculati...
How to convert array to SimpleXML
...y (
'stack' => 'overflow',
),
);
$xml = new SimpleXMLElement('<root/>');
array_walk_recursive($test_array, array ($xml, 'addChild'));
print $xml->asXML();
results in
<?xml version="1.0"?>
<root>
<blub>bla</blub>
<bar>foo</bar>
<overfl...
accepting HTTPS connections with self-signed certificates
...mportant parts from my blog article here:
Grab all required certificates (root and any intermediate CA’s)
Create a keystore with keytool and the BouncyCastle provider and import the certs
Load the keystore in your android app and use it for the secured connections (I recommend to use the Apache H...
Error while pull from git - insufficient permission for adding an object to repository database .git
...gardless of where in your repo you currently are. If you're already in the root you can just run sudo chown -R $USER:$USER .git
– dwurf
May 29 '14 at 2:31
7
...
What is the difference between gmake and make?
...gmake is soft link to make):
-> ls -l $(which gmake make)
lrwxrwxrwx 1 root root 4 Jun 5 2007 /usr/bin/gmake -> make
-rwxr-xr-x 1 root root 168976 Jul 13 2006 /usr/bin/make
gmake stands for GNU make. There're different implementations of make. On Linux machine most probably make wil...
What are the applications of binary trees?
...hing when you balance them. This involves rotating sub-trees through their root node so that the height difference between any two sub-trees is less than or equal to 1. Adding those names above one at a time into a balanced tree would give you the following sequence:
1. Alice
/ \
= ...
驯服Linux OOM Killer（优质英文资料翻译） - 操作系统(内核) - 清泛网 - 专注IT技能提升
...要操作。在这样的情况下，
用户和系统管理员经常询问如何控制 OOM Killer的行为。为了方便控制，引入了 /proc/ <pid> /oom_adj旋钮，以防止系统中的重要进程被杀死，并定义要杀死的进程的顺序。oom_adj的可能值范围从 -17 到 +15...
驯服Linux OOM Killer（优质英文资料翻译） - 操作系统(内核) - 清泛网 - 专注IT技能提升
...要操作。在这样的情况下，
用户和系统管理员经常询问如何控制 OOM Killer的行为。为了方便控制，引入了 /proc/ <pid> /oom_adj旋钮，以防止系统中的重要进程被杀死，并定义要杀死的进程的顺序。oom_adj的可能值范围从 -17 到 +15...
驯服Linux OOM Killer（优质英文资料翻译） - 操作系统(内核) - 清泛网 - 专注IT技能提升
...要操作。在这样的情况下，
用户和系统管理员经常询问如何控制 OOM Killer的行为。为了方便控制，引入了 /proc/ <pid> /oom_adj旋钮，以防止系统中的重要进程被杀死，并定义要杀死的进程的顺序。oom_adj的可能值范围从 -17 到 +15...