通过yum install安装的JDK 8,自动在/usr/bin目录下创建了java命令的软链接 并且通过alternatives --list,发现自动配置了java、javac等命令的alternatives软链接 通过sudo也能成功找到java命令 3.2 再次尝试 再次尝试,将/etc/profile中配置的JAVA_HOME去掉,通过update-alternatives创建JDK 17的java、javac命令的 update-a...
查找软件包命令:sudo apt search <keyword> 列出所有已安装的包:apt list --installed 列出所有已安装的包的版本信息:apt list --all-versions 实例 查看一些可更新的包: sudo apt update 升级安装包: sudo apt upgrade 在以上交互式输入字母Y即可开始升级。 可以将以下两个命令组合起来,一键升级: sudo apt upd...
ddeletea partition l list known partition types m printthismenu n add anewpartitiono create anewemptyDOSpartition table p print the partition table q quit without saving changes s create anewemptySun disklabel t change a partition's system id u change display/entry units v verify the partition ...
andcouldincertain setups cause problemswith:1)software that runs at boot time(e.g.,old versions of LILO)2)bootingandpartitioning softwarefromotherOSs(e.g.,DOS FDISK,OS/2FDISK)Command(mforhelp):<==等待你的输入!
tail -f nginx.access.log | grep -E "getPaginateList|queryAccounts" --color :匹配多个关键字之一即可 1.5 ps ps -ef |grep java:查看Java进程。 ps -ef |grep tomcat:查看Tomcat进程。 curl www.baidu.com:查看url能不能使用。 ps -ef | grep 8080:查看端口号8080被哪个进程占用。
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Release notes usually only list changes that happened between two subsequent releases. Certain important entries from the release notes of previous product versions are repeated. To make these entries easier to identify, they contain a note to that effect. However, repeated entries are provided as ...
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Thealternativescommand, which manages default commands through symbolic links, can be used to select the default Java version. To list the available versions of Java that can be managed byalternatives, usealternatives –config java: sudoalternatives--configjava ...
Method 2: Check Java Path There are two ways to find the Java directory path. The first option is to run the following command: update-alternatives --list javaCopy The system responds with the path where Java is installed. Use the path to check the Java version: ...