CentOS 6wget https://www.softwarecollections.org/repos/rhscl/devtoolset-3/epel-6-x86_64/noarch/rhscl-devtoolset-3-epel-6-x86_64-1-2.noarch.rpm rpm -Uvh rhscl-devtoolset-3-epel-6-x86_64-1-2.noarch.rpm yum update yum install devtoolset-3-gcc devtoolset-3-gcc-c++ devtoolset-3-toolchain -yCentOS 7wget https://www.softwarecollections.org/repos/rhscl/devtoolset-3/epel-7-x86_64/noarch/rhscl-devtoolset-3-epel-7-x86_64-1-2.noarch.rpm rpm -Uvh rhscl-devtoolset-3-epel-7-x86_64-1-2.noarch.rpm yum update yum
由于Tomcat要启用APR，而APR依赖openssl v1.0.2+，CentOS 7自带的openssl版本为v1.0.1，所以只能手动升级openssl。先下载源码编译wget -c https://www.openssl.org/source/openssl-1.0.2h.tar.gz tar zxf openssl-1.0.2h.tar.gz cd openssl-1.0.2h ./config -fpic shared make depend make -j4 && make install echo "/usr/local/ssl/lib" > /etc/ld.so.conf.d/openssl.conf ldconfig查看Openssl版本/esr/local/ssl/bin/openssl version安装正确的话会显示# openssl version OpenSSL 1.0.2h 3 May 2016操作完成。
网上找了几个ia32-libs的rpm，因为依赖关系无法正常安装，最后测试了一下，安装下面几个就可以正常使用32位的程序了。yum install glibc.i686 zlib.i686 libstdc++.i686
首先到Java网站下载最新的JDK8http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.htmlwget -c http://download.oracle.com/otn-pub/java/jdk/8u92-b14/jdk-8u92-linux-x64.tar.gz tar zxf jdk-8u92-linux-x64.tar.gz mkdir /usr/local/java mv jdk1.8.0_92 /usr/local/java/ ln -s /usr/local/java/jdk1.8.0_92 /usr/local/java/jdk做链接是为了下次升级的方便，下次升级只要重新链接一下新版本的文件夹，而不需要再更改环境变量。写入环境变量nano /etc/profile在文件后面添加几行export JAVA_HOME=/usr/local/java/jdk export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH expo
用Debian习惯了再接触CentOS就有点陌生了，今天安装了个CentOS 7来学习，记录一下。我用的是OS X的iTerm2连接Centos的ssh，默认中文会乱码，指定一下LC_ALL就可以解决，这个方法对Debian的ssh也适用。cat >>.bashrc<<eof export LC_ALL=zh_CN.utf8 eof source .bashrc先装个第三方软件源丰富一下软件仓库rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpmCentOS 7默认最小化安装居然不带netstat、ifconfig、dig、nslookup、lsof等基础命令，太不人性化了，还有我习惯用的nano。yum update yum install net-tools bind-utils lsof nano yum-utils -y常用工具iotop、iftop、vnstat、mtr等等yum install iotop iftop nload vnstat m
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