I'm really new to scripting and was wondering if you could help me out. I have the following script that I inherited:
Code:
#!/bin/bash
#
# Usage
# From the agent directory:
# ./run-any-agent AgentName
#
TAC_AGENT_HOME=`pwd`
LIB=${TAC_AGENT_HOME}/lib
CLASSPATH=.
CLASSPATH=${CLASSPATH}:${TAC_AGENT_HOME}/bin
for i in $( ls ${LIB}/*.jar ); do
CLASSPATH=${CLASSPATH}:$i
done
java -server -Xmx1024M -Xms512M -cp $CLASSPATH edu.umich.eecs.tac.aa.agentware.Main -config config/$1.conf
So, when I type in
Code:
./run-any-agent MyProgram
it runs "MyProgram". However, since I have many programs that I have to run using this script at the same time, I typically open up many terminals and execute the script on the programs individually. However, this is beginning to be painful. So, I was wondering, if there's any way that I could type in something similar to:
This should do the trick. '$*' holds the positional parameters that you use when calling "run-all-agents". It executes and starts "run-any-agent" in the background.
Code:
#!/bin/bash
for agent in $*
do
./run-any-agent $agent & # run in background
done
I'll mess with this a little and report back. It might also be nice to read the programs I want to run off a file (rather than "manually" typing them in). Anyway, I'll be back.
Thanks,
DTW
---------- Post updated at 04:01 PM ---------- Previous update was at 03:50 PM ----------
Quote:
I'll mess with this a little and report back.
The script seems to run just fine. I tried running two programs for now using the command:
Code:
./run-all-agents MyProgram1 MyProgram2
However, I was wondering if there's a clean way to stop the programs, though. I used to be able to hit Ctrl+C to stop them but I'm not sure that is working very well now. They still run when I press the "Ctrl" key followed by the "C" key. Is there a script that can be written to halt the running programs cleanly too?
Thanks,
DTW
Last edited by DTriniWay; 01-20-2010 at 05:06 PM..
The PID in the above example is 13112. The tricky part is you don't want to leave any child/zombie processes that may have spawned from your script. If it does spawn extra processes then your script will have to find all the children and kill them in order. The last process you would kill would be 13112 since that is your original process. It's definitely doable though. Hope that makes sense.
** NOTE: Notice that I left a space after MyProgramN in my grep statement. This was done to ensure you had the right process for those cases when you might have MyProgram1 and MyProgram11 running. If you're looking for MyProgram1, then you want to make sure you don't accidentally catch MyProgram1N.
Sure, but it's a little tricky. You would first need to find out the PID of the agent you started. You could do this with the 'ps' command.
Thanks for your reply. Cool. So far I've been doing:
Code:
ps aux | more
And then I scroll through the list to find the PIDs. Sometimes when I use the "kill -9" command, though, it doesn't seem to kill the process. I'm not sure why.
I'm not sure what "-ef" and "-v" do but I can look them up.
Quote:
The PID in the above example is 13112. The tricky part is you don't want to leave any child/zombie processes that may have spawned from your script. If it does spawn extra processes then your script will have to find all the children and kill them in order. The last process you would kill would be 13112 since that is your original process. It's definitely doable though. Hope that makes sense.
Yes, it makes a lot of sense. My next question then would be: How do I find out all the children or zombie processes and then go ahead killing them nicely? This way, then I'd have a neat way (thanks to you) to start the programs and then another neat way to kill them all. It would save me a lot hassle. I must say that scripts are cool. :-)
Thanks,
DTW
P.S:
Quote:
NOTE: Notice that I left a space after MyProgramN in my grep statement. This was done to ensure you had the right process for those cases when you might have MyProgram1 and MyProgram11 running. If you're looking for MyProgram1, then you want to make sure you don't accidentally catch MyProgram1N.
Hmm - I'd have to think about what you wrote, but, thank you for clearing that up.
---------- Post updated at 04:55 PM ---------- Previous update was at 04:34 PM ----------
---------- Post updated at 05:15 PM ---------- Previous update was at 04:55 PM ----------
Quote:
I'm not sure what "-ef" and "-v" do but I can look them up.
So, "-e" seems to be a way to use a pattern of some sort. I'm not sure what the "f" after the "e" does, really.
"-v" specifies the string that we don't want to grep.
Code:
grep abc -v
would mean look for all files that DON'T have "abc" in them? Does this sound correct?
#!/bin/bash
trap killsubs INT
killsubs()
{
echo "CTRL-C was pressed"
jobs -p|xargs kill
echo "Jobs were killed"
exit
}
for agent in "$@"
do
./run-any-agent $agent &
done
wait
---------- Post updated at 05:40 PM ---------- Previous update was at 05:27 PM ----------
Quote:
Thanks you for your post. I'll check what you wrote out and report back.
Quote:
Originally Posted by Scrutinizer
You could try something like this:
Code:
#!/bin/bash
trap killsubs INT
killsubs()
{
echo "CTRL-C was pressed"
jobs -p|xargs kill
echo "Jobs were killed"
exit
}
for agent in "$@"
do
./run-any-agent $agent &
done
wait
I tried running this...It didn't apparently do anything that I could see. Hmm - interesting.
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Help with Running More than One Program
