redhat | 易学教程

wkhtmltopdf custom font letter spacing

阅读更多关于 wkhtmltopdf custom font letter spacing

问题 I'm running wkhtmltopdf on linux server (centos.10.x86_64). I'm trying to add "Times New Roman" font to the page. I see the fonts but on some font sizes it adds spaces between the letters . I tried setting the font by installing it on the machine (ttf) or by calling an external odf that I converted from the ttf or by adding it with base64 (css). It looks good on all, but it inserts spaces between the laters. I also tried to the dpi parameter but still the spaces are generated. Generating the

How to Exclude /usr/include Path from Linux Application?

阅读更多关于 How to Exclude /usr/include Path from Linux Application?

问题 I am running into a problem I have not been able to avoid. Redhat 6 (or most linux packages) comes with a default QT package installed with headers/etc in the /usr/lib and /usr/include folders. Now, I am wanting to link against a newer version of QT without removing the older version. Unfortunately, since the headers are in the /include/ folder, gcc automatically finds them, and then uses the wrong include files (instead of those which I have elsewhere). I cannot seem to stop the compiler

Can I use a shared library compiled on Ubuntu on a Redhat Linux machine?

阅读更多关于 Can I use a shared library compiled on Ubuntu on a Redhat Linux machine?

问题 I have compiled a shared library on my Ubuntu 9.10 desktop. I want to send the shared lib to a co-developer who has a Red Hat Enterprise 5 box. Can he use my shared lib on his machine? 回答1: First point: all of the answers regarding compiler version seem misguided. What's important are the linkages (and the architecture, of course). If you copy the .so file over to the start system (into its own /usr/local/* or /opt/* directory, for example) then try to run the intended executable using an LD

Linux入门

阅读更多关于 Linux入门

Linux入门操作系统的分类 Windows系列操作系统，Unix类操作系统，Linux类操作系统，Mac操作系统提问：为什么要去学习Linux？同学甲可能要问，你介绍了这么多有关Linux的知识，但我还是懵逼，我从小学去网吧打泡泡堂用的就是Windows，上了这么多年学也是用的Windows，为什么要让我学这个Linux？同学乙可能要问，听起来Linux好像很高大上，如果我放弃Windows去学Linux，用不了多久就会升职加薪当上总经理赢取白富美吗？想想还很激动。。。那么我要回答了：　　如果Windows意味着生活和游戏，那么Linux就代表着严谨和工作，学习Linux代表着你要开发软件，你要测试程序，你要维护服务器。那么依据呢？请看如下：由此可见，无论你是python后端开发，还是python测试开发，又或者是爬虫、数据挖掘开发，统统都必须学会Linux，这是开发者必须的技能。　　我们都知道Linux这玩意是在电脑上运行的，所以说Linux就是一组软件，问题是这个软件是操作系统还是应用程序？而且Linux可以在哪些种类的电脑上运行呢？Linux来自哪里？为什么Linux不收钱？（万恶的windows分为各种收费版、家庭版、专业版、企业版。。。。）这些问题我们是不是都得了解，以免人家和你聊linux，俺不会尴尬呀。什么是操作系统我们都知道windows 7

Java in Linux - different look and feel classes for root and non-root

阅读更多关于 Java in Linux - different look and feel classes for root and non-root

问题 I noticed that Java proposes different look and feel classes for root and non-root users. I am trying to understand how to make LAF consistent. Moreover, it's inconsistent even within a user/root: depends on how user/root logged in: Sample code (compiled and packaged in laf.jar ): import javax.swing.UIManager; public class laf { public static void main(java.lang.String[] args) { try { System.out.print(UIManager.getSystemLookAndFeelClassName()); } catch (Exception e) { } } } Scenario 1 Logs in

Linux安装Jenkins

阅读更多关于 Linux安装Jenkins

Linux安装Jenkins 查看操作系统信息 cat /proc/version 我的是RedHat；打开jenkins下载页面：https://jenkins.io/zh/download/ 安装找到对应的操作系统版本打开；比如，我的是：https://pkg.jenkins.io/redhat/ 执行如下命令： sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat/jenkins.repo sudo rpm --import https://pkg.jenkins.io/redhat/jenkins.io.key 如果提示wget未安装，可以执行： yum install wget 安装成功之后执行即可： yum install jenkins 来源： CSDN 作者：七天007 链接： https://blog.csdn.net/qq_25342363/article/details/103810227

Installing xdebug on php 5.6 Amazon Linux AMI

阅读更多关于 Installing xdebug on php 5.6 Amazon Linux AMI

问题 I created an Elastic Beanstalk Environment ID_LIKE="rhel fedora" VERSION_ID="2016.03" PRETTY_NAME="Amazon Linux AMI 2016.03" ANSI_COLOR="0;33" CPE_NAME="cpe:/o:amazon:linux:2016.03:ga" HOME_URL="http://aws.amazon.com/amazon-linux-ami/" I'm trying to install xdebug using sudo yum install php-pecl-xdebug But I keep get the following error Loaded plugins: priorities, update-motd, upgrade-helper Resolving Dependencies --> Running transaction check ---> Package php-pecl-xdebug.x86_64 0:2.2.3-1.5

PHP is_writable() function always returns false for a writable directory

阅读更多关于 PHP is_writable() function always returns false for a writable directory

问题 I'm trying to install a PHP-based software package in a Red Hat 7 Amazon EC2 instance (ami-8cff51fb) that has had Apache 2.4.6 and PHP 5.4.16 installed on it using yum. The installation fails because it says a particular directory needs to be writable by the webserver with 0755 or 0775 permissions. The directory in question has 0775 permissions with root:apache ownership. I have verified that the httpd process is being run by the apache user and that the apache user is a member of the apache

mysql_connect(): No such file or directory

阅读更多关于 mysql_connect(): No such file or directory

问题 I have just installed a MySQL server (version 3.23.58) on an old RedHat7. I cannot install a more recent MySQL version because of the dependencies. I cannot update librairies on this RedHat server. However, I have a problem connecting to the database with PHP. First I used PDO but I realized that PDO was not compatible with MySQL 3.23... So I used mysql_connect() . Now I have the following error: Warning: mysql_connect(): No such file or directory in /user/local/apache/htdocs/php/database.php

Can TensorFlow run with multiple CPUs (no GPUs)?

阅读更多关于 Can TensorFlow run with multiple CPUs (no GPUs)?

问题 I'm trying to learn distributed TensorFlow. Tried out a piece code as explained here: with tf.device("/cpu:0"): W = tf.Variable(tf.zeros([784, 10])) b = tf.Variable(tf.zeros([10])) with tf.device("/cpu:1"): y = tf.nn.softmax(tf.matmul(x, W) + b) loss = tf.reduce_mean(-tf.reduce_sum(y_ * tf.log(y), reduction_indices=[1])) Getting the following error: tensorflow.python.framework.errors_impl.InvalidArgumentError: Cannot assign a device for operation 'MatMul': Operation was explicitly assigned to