文章目录[隐藏]
linux查看java jdk安装路径和设置环境变量
linux:
echo $PATH
二:下面是配置linux的环境变量:(记得source .bash_profile) . 修改/etc/profile文件 (全局所有用户)
vi 此文件/etc/profile 在profile文件末尾加入:
vi 此文件/etc/profile
在profile文件末尾加入:
export JAVA_HOME=/usr/share/jdk1.6.0_20
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
.修改.bash_profile文件 (某个用户权限使用这些环境变量)
.bash_profile文件末尾加入:
export JAVA_HOME=/usr/share/jdk1.6.0_20
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
.shell终端执行下列命令: (临时用)
export JAVA_HOME=/usr/share/jdk1.6.0_14
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
三. 卸载jdk ·找到jdk安装目录的_uninst子目录 ·在shell终端执行命令./uninstall.sh即可卸载jdk。
Linux 系统如何查看系统配置信息
一:查看cpu [</a>/* */ /]# <strong>more /proc/cpuinfo | grep "model name"</strong> model name : Intel(R) Xeon(R) CPU X3220 @ 2.40GHz model name : Intel(R) Xeon(R) CPU X3220 @ 2.40GHz model name : Intel(R) Xeon(R) CPU X3220 @ 2.40GHz model name : Intel(R) Xeon(R) CPU X3220 @ 2.40GHz [<a class="__yjs_email__" href="http://blog.ytso.com/cdn-cgi/l/email-protection" data-yjsemail="f5879a9a81b5868783">[email protected]</a>/* */ /]# grep "model name" /proc/cpuinfo model name : Intel(R) Xeon(R) CPU X3220 @ 2.40GHz model name : Intel(R) Xeon(R) CPU X3220 @ 2.40GHz model name : Intel(R) Xeon(R) CPU X3220 @ 2.40GHz model name : Intel(R) Xeon(R) CPU X3220 @ 2.40GHz [[email protected]</a>/* */ /]# grep "model name" /proc/cpuinfo | cut -f2 -d: Intel(R) Xeon(R) CPU X3220 @ 2.40GHz Intel(R) Xeon(R) CPU X3220 @ 2.40GHz Intel(R) Xeon(R) CPU X3220 @ 2.40GHz Intel(R) Xeon(R) CPU X3220 @ 2.40GHz <br><strong>ä¼¥内å</strong> [<a class="__yjs_email__" href="http://blog.ytso.com/cdn-cgi/l/email-protection" data-yjsemail="4c3e2323380c3f3e3a">[email protected]</a>/* */ /]# grep MemTotal /proc/meminfo MemTotal: 614400 kB [<a class="__yjs_email__" href="http://blog.ytso.com/cdn-cgi/l/email-protection" data-yjsemail="b9cbd6d6cdf9cacbcf">[email protected]</a>/* */ /]# free -g<br><br>[<a class="__yjs_email__" href="http://blog.ytso.com/cdn-cgi/l/email-protection" data-yjsemail="0e7c61617a4e7d7c78">[email protected]</a>/* */ /]# free -m total used free shared buffers cached Mem: 600 23 576 0 0 0 -/+ buffers/cache: 23 576 Swap: 0 0 0 [<a class="__yjs_email__" href="http://blog.ytso.com/cdn-cgi/l/email-protection" data-yjsemail="82f0ededf6c2f1f0f4">[email160;protected]</a>/* */ /]# free -m |grep "Mem" | awk '{print $2}' 600[<a class="__yjs_email__" href="http://blog.ytso.com/cdn-cgi/l/email-protection" data-yjsemail="22504d4d5662515054">[email protected]</a>/* */ /]#grep MemTotal /proc/meminfo | cut -f2 -d:/* */ /]# getconf LONG_BIT 32 <br><strong>åï¼æ¥linuxçæ¬</strong> [<a class="__yjs_email__" href="http://blog.ytso.com/cdn-cgi/l/email-protection" data-yjsemail="23514c4c5763505155">[email0;protected]</a>/* */ /]# more /etc/redhat-release CentOS release 5 (Final) [<a class="__yjs_email__" href="http://blog.ytso.com/cdn-cgi/l/email-protection" data-yjsemail="b0c2dfdfc4f0c3c2c6">[email160;protected][email0;protected]a>/* */) (gc c version 4.1.2 20071124 (Red Hat 4.1.2-42)) #1 SMP Tue Jan 13 12:31:30 MSK 2009 五:查看内核版本 [ /]# uname -r 2.6.18-92.1.18.el5.028stab060.2PAE [ /]# uname -a Linux srv.eddiechen.cn 2.6.18-92.1.18.el5.028stab060.2PAE #1 SMP Tue Jan 13 12:31:30 MSK 2009 i686 i686 i386 GNU/Linux 六:查看时区 [ /]# date -R Wed, 25 Feb 2009 02:20:50 +0000 [ /]# mv /etc/localtime /etc/localtime.save [ /]# cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime [ /]# date -R Wed, 25 Feb 2009 10:24:26 +0800 七:主机名 [ /]# hostname srv.eddiechen.cn 八:查看selinux情况 [ /]# sestatus SELinux status: disabled 九:网络 IP [ /]# ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}' 207.154.202.216 网关 [ /]# cat /etc/sysconfig/network NETWORKING="yes" GATEWAY="192.0.2.1" HOSTNAME="srv.eddiechen.cn" dns [ /]# cat /etc/resolv.conf nameserver 208.74.168.131 nameserver 208.74.168.132 nameserver 4.2.2.1 十:已经安装的软件包 [ /]# rpm -qa | wc -l 197 [ /]# yum list installed | wc -l 198 十一:磁盘和分区 [ /]# df -h Filesystem Size Used Avail Use % Mounted on /dev/simfs 10G 353M 9.7G 4% / [ /]# du -sh 353M [ /]# du /etc -sh 4.6M /etc
原创文章,作者:ItWorker,如若转载,请注明出处:https://blog.ytso.com/1453.html