Visit The New, Modern Unix Linux Community


How to get the start time for a JAVA Main running process


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers How to get the start time for a JAVA Main running process
# 1  
How to get the start time for a JAVA Main running process

I have a script that executes a MAIN JAVA FILE

It does check if the process is already running or not by using this code
Code:
w_pid=`ps -efx | grep -v grep | grep "FileTransactionArchiveMain dvlp"|awk '{print $11}'`
if [ "$w_pid" != "" ]
then
    #echo 'Another instance is running.'
    exit
fi

Now I have to find when that process had started.

for finding a batch file start time i used this
Code:
VAR=$(ps -ef | grep batch_proc_x | grep -v grep)

batch_proc_x is a script file.

but if I use the same code for FileTransactionArchiveMain VAR returns null or blank.

how do I get the start time for FileTransactionArchiveMain?
# 2  
On the one hand, your existing check for an existing process looks a bit scary, but if it works so be it; although I'd ask what happens if the Java is started with another argument count?

Meanwhile, since you're trying to reuse code that works in one situation and doesn't seem to in a seemingly similar one, I'd suggest you break your existing variable down and observe it's various pipeline steps left to right to get familiar with what it's doing. You might notice that one of the columns involved with the ps command reflects the Start Time and/or Date. You might also note that your second scenario is not carrying all that many parameters, and misses the 11th one that the Java job is using.

This approach will allow you to fine tune the specifics of the scenario that you're checking...but it will also help you to get familiar with the code you're trying to use...re-use.
 

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #629
Difficulty: Easy
In PHP, False == 0;
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Command to get exact tomcat process I am running ignoring other java process

Team, I have multiple batchjobs running in VM, if I do ps -ef |grep java or tomcat I am getting multiple process list. How do I get my exact tomcat process running and that is unique? via shell script? (4 Replies)
Discussion started by: Ghanshyam Ratho
4 Replies

2. Shell Programming and Scripting

How to calculate time difference between start and end time of a process!

Hello All, I have a problem calculating the time difference between start and end timings...! the timings are given by 24hr format.. Start Date : 08/05/10 12:55 End Date : 08/09/10 06:50 above values are in mm/dd/yy hh:mm format. Now the thing is, 7th(08/07/10) and... (16 Replies)
Discussion started by: smarty86
16 Replies

3. UNIX for Dummies Questions & Answers

how to get start time of a running process

I am trying to see if a process is running what was its start time. here is the code that I am using if then echo 'Gateway output processing started.' else VAR=$(ps -ef | grep batch_output_x ) ... fi now the problem i see is when the process is running i get two... (3 Replies)
Discussion started by: akabir77
3 Replies

4. Shell Programming and Scripting

ps showing inconsistent process start time

Not sure if it makes a difference but "foo" is a java process. The start time reported by various flavors of ps seems to be flopping back and forth by a minute. I have many (a few hundred) "foo" like processes which tend to be somewhat unstable and get restarted somewhat frequently, I wrote a... (2 Replies)
Discussion started by: jstrangfeld
2 Replies

5. Linux

Process start time not showing correct time

Process start time is not showing the correct time: I had started a process on Jun 17th at 23:30:00. Next day morning when I run the command "ps -ef | grep mq", the process is showing the start date of Jun 17th but the start time is 00:16:41 Day/Date is setup correctly on the server. It... (2 Replies)
Discussion started by: hemangjani
2 Replies

6. HP-UX

HP UX start process at boot time

When I get start program at boot I read which run level /sbin/rcx.d runlevel=0.....x only read directory which directory name has UpperCase 'S' is not enough someone says that I need to reference another file which file I need to reference 1)/etc/rc.config.d/all file which parameter... (4 Replies)
Discussion started by: alert0919
4 Replies

7. UNIX for Advanced & Expert Users

start time of a terminated process

Hi, I have a shell script which i am running. I want it's starting time (the time when the execution of the shell script started) in another shell script. Note that the process has already terminated when i need it's starting time.... else i could have used ps -f | cut -d" " -f5... But that's... (2 Replies)
Discussion started by: k_chaaya
2 Replies

8. UNIX for Advanced & Expert Users

to get process start date and time

what is command to get same using ps with switch. I know process id, by specify process id. It should work on solaris and hp-ux I will be happy if for both different commands. (2 Replies)
Discussion started by: naeem ahmad
2 Replies

9. Programming

get process start time

Hi all, I like to know how can I get currenlty running process start time and date , I know only porcess id in solaris and hp-ux and what is command to get same using ps with switch. Thanks Naeem (1 Reply)
Discussion started by: naeem ahmad
1 Replies

10. UNIX for Advanced & Expert Users

start a process at boot up time

Hi, I have a program that check the IP address and automatic update it to the DNS server. I would like to run this program when the computer bootup after pppd get a connection. How do I add it to the init file. Does any one have any information of how to do it. I run a Linux Mandrake as a... (1 Reply)
Discussion started by: vtran4270
1 Replies

Featured Tech Videos