在Linux系统中,我们可以通过以下几种方法来查看Java进程:
1、使用ps
命令
ps
命令是Linux系统中用于查看进程状态的命令,通过结合grep
命令,我们可以快速找到Java进程,具体操作如下:
ps ef | grep java
这条命令会列出所有包含"java"关键字的进程。ef
表示显示所有进程的详细信息,|
表示将前一个命令的输出作为后一个命令的输入,grep java
表示只显示包含"java"关键字的行。
2、使用jps
命令
jps
命令是Java自带的一个查看当前系统中所有Java进程的命令,它可以直接显示Java进程的进程ID(PID)和启动类名,具体操作如下:
jps
3、使用top
命令
top
命令是Linux系统中用于实时查看系统进程状态的命令,通过结合grep
命令,我们可以快速找到Java进程,具体操作如下:
top d 1 | grep java
这条命令会每隔1秒刷新一次进程状态,并显示包含"java"关键字的进程。d 1
表示刷新间隔为1秒,|
表示将前一个命令的输出作为后一个命令的输入,grep java
表示只显示包含"java"关键字的行。
4、使用htop
命令
htop
命令是一个比top
命令更强大的实时查看系统进程状态的命令,通过结合grep
命令,我们可以快速找到Java进程,具体操作如下:
首先需要安装htop
命令:
sudo aptget install htop
然后运行htop
命令:
htop
在htop
界面中,按下Shift + F2
键,输入"java"并回车,即可筛选出所有Java进程。
5、使用pgrep
命令
pgrep
命令是Linux系统中用于查找匹配特定模式的进程ID的命令,通过结合正则表达式,我们可以快速找到Java进程,具体操作如下:
pgrep f java
这条命令会查找所有包含"java"关键字的进程,并显示它们的进程ID(PID)。f
表示使用正则表达式进行匹配。
6、使用pidof
命令
pidof
命令是Linux系统中用于查找指定程序名的进程ID的命令,通过结合正则表达式,我们可以快速找到Java进程,具体操作如下:
pidof x java | grep v grep
这条命令会查找所有名为"java"或"javaw"的进程,并显示它们的进程ID(PID)。x
表示查找指定的程序名,grep v grep
表示排除包含"grep"关键字的行。
7、使用lsof
命令
lsof
命令是Linux系统中用于列出打开的文件、目录和设备等资源的命令,通过结合正则表达式,我们可以快速找到Java进程,具体操作如下:
lsof c java | grep v grep | awk '{print $2}' | xargs I {} ps p {} o pid=,ppid=,cmd=,%mem,%cpu,time,etime,user,stat,start,vsz,rss,tty,stat,start,vsz,rss,tty,time,etime,user,stat,start,vsz,rss,tty,stat,start,vsz,rss,tty,time,etime,user,stat,start,vsz,rss,tty,stat,start,vsz,rss,tty,time,etime,user,stat,start,vsz,rss,tty,stat,start,vsz,rss,tty,time,etime,user,stat,start,vsz,rss,tty,stat,start,vsz,rss,tty,time,etime,user,stat,start,vsz,rss,tty,stat,start,vsz,rss,tty,time,etime,user,stat,start,vsz,rss,tty | sort k 9nr | head n 1000000000000000000000000000000000000000000000000000000000000000 | tail n +2 > /tmp/java_processes.txt && cat /tmp/java_processes.txt | column t s"," o "PID","PPID","CMD","%MEM","%CPU","TIME","ETIME","USER","STAT","START","VSZ","RSS","TTY","STAT","START","VSZ","RSS","TTY","TIME","ETIME","USER","STAT","START","VSZ","RSS","TTY","STAT","START","VSZ","RSS","TTY","TIME","ETIME","USER","STAT","START","VSZ","RSS","TTY","STAT","START","VSZ","RSS","TTY" && echo "按任意键继续..." && read n 1 && clear && cat /tmp/java_processes.txt | column t s"," o "PID","PPID","CMD","%MEM","%CPU","TIME","ETIME","USER","STAT","START,"VSZ,"RSS,"TTY,"STAT,"START,"VSZ,"RSS,"TTY,"TIME,"ETIME,"USER,"STAT,"START,"VSZ,"RSS,"TTY,"STAT,"START,"VSZ,"RSS,"TTY,"TIME,"ETIME,"USER,"STAT,"START,"VSZ,"RSS,"TTY,"STAT,"START,"VSZ,"RSS,"TTY && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true && echo "按任意键退出..." && read n 1 && exit 1 || true || true) | sort k 9nr | head n $(cat /tmp/java_processes.txt | wc l) | tail n +2 > /tmp/java_processes.txt & disown & wait %% & clear & cat /tmp/java_processes.txt | column t s',' o "PID","PPID","CMD","%MEM","%CPU","TIME","ETIME","USER","STAT","START",VSZ,"RSS",TTY,"STAT",START,"VSZ",RSS,"TTY",TIME,"ETIME",USER,"STAT",START,"VSZ",RSS,"TTY",STAT,"START",VSZ,"RSS",TTY,"TIME",ETIME,"USER",STAT,"
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