Best answer: What is PS grep Java?

ps -ef|grep $(which java) this will list java processes, but only for your default java installation. If you have more than one Java installed, e.g. your Jboss with java7, tomcat with java6, and eclipse with java5, this will fail. There is another tool called pgrep .

What is ps grep for?

ps – list processes. -e – show all processes, not just those belonging to the user. -f – show processes in full format (more detailed than default) command 1 | command 2 – pass output of command 1 as input to command 2. grep find lines containing a pattern.

What is ps Java?

The ps command is used to view currently running processes on the system. It helps us to determine which process is doing what in our system, how much memory it is using, how much CPU space it occupies, user ID, command name, etc .

What is ps grep Smon?

on linux. ps -ef | grep smon — shows the number of instances running. windows : go to services and chk the Oracle Sids.

What is E and F in ps?

-e. displays information on all accessible processes. You can specify -A, -a, and -e in any combination; however, -a overrides both -A and -e. -f. displays information as if the user specified -o ruser=UID -o pid,ppid,pcpu=C -o stime,tty=TTY -o atime,args -G idlist.

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What does ps grep return?

The ps command will output all your currently running processes. The first grep will remove the grep process from this list. The second will extract any firefox process in the filtered list.

What is the use of ps command in Linux?

Linux provides us a utility called ps for viewing information related with the processes on a system which stands as abbreviation for “Process Status”. ps command is used to list the currently running processes and their PIDs along with some other information depends on different options.

What are various options of ps commands?


Option Description
-d Displays all processes with the exception of session leaders.
-e Displays all processes.
-f Displays a full listing.
-glist Displays data for the list of group leader IDs.

Do I have Java Linux?

Find Java by listing all installed packages. … Use the commands: sudo yum list installed and sudo yum list installed | grep -i openjdk instead. With this article, you have successfully checked the Java version installed on Linux.

What does ps do in Unix?

The command ps stands for process. In UNIX, everything you do, every command you type, is considered a “process”.

What is ps grep Pmon?

Some typical uses are to look at all processes for a user (e.g. ps -fu oracle), to look for a particular process by process ID (ps -fp PID), and to look for a process across the whole system (ps -ef|grep pmon). … Grep sees the characters in brackets as a set and matches any of the characters you provide.

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What is the output of ps?

ps displays status information about processes, and optionally, the threads running under each process. By default, for each process associated with the user’s terminal, ps displays the process ID (PID), TTY, processor time used (TIME), and name of the command (COMM).

How do you grep a process?

Procedure to find process by name on Linux

  1. Open the terminal application.
  2. Type the pidof command as follows to find PID for firefox process: pidof firefox.
  3. Or use the ps command along with grep command as follows: ps aux | grep -i firefox.
  4. To look up or signal processes based on name use:

Is Linux a command?

The Linux command is a utility of the Linux operating system. All basic and advanced tasks can be done by executing commands. The commands are executed on the Linux terminal. The terminal is a command-line interface to interact with the system, which is similar to the command prompt in the Windows OS.