Shell Programming and Scripting

I have a problem here.
i am running my script in nohup but if i run it 2 or three time , in my output i see it is giving me old data as well, in-spite i delete

Code:

nohup.out

file.
i tried to look a lot from where the old data is coming.
can some one tell me how the old data is also coming again and again

and is there a way i can run 5 scripts in same with out a cron like in a daemon job?

Code:

nohup sh path/script.sh &

i have something like below in my script will it be creating a problem ?

Code:

DATE_3=`date | awk '{print $2,$3,$4}'

What is "old data"?

If you're running background jobs like above in parallel, all logging to the same file, it's no surprise their output shows up garbled in there.

yes true.. i am running in parallel, so is there a way i can delete that

Code:

nohup

because i cant see where is that file.
and is there a way i can run all the scripts in parallel other than cron.?

To tell you the truth, what you have shown us so far is of little help
as

Code:

DATE_3=`date | awk '{print $2,$3,$4}'

is just assigning DATE_3 with the wanted value...
We have no idea where and what output you are talking about as we have nothing else to view...

Using nohup is NOT for cron specifically it is more for backgrond processes to not depend on a terminal
And yes, you can execute (almost) in parallel 5 times the same script, only it will not solve your problem as Rudi already said if they write in the same file, it makes a mess...

all my scripts which are running in parallel are pointing to different directories.may be file name is same but different location.

for example: i scheduled a script in cron, when it ran it gave me 3 output in email,each output is few hours old.

when i run same script manually in its directory it run fine and give correct result.

now only some expert can advise whats happening here

Show us the script! Without seeing the script we can only guess at dozens of things that various invocations of the script(s) might be doing to interfere with each other.

Show us the script!!!

Show us the command lines that are being used to invoke your script(s).

Show us the output your are getting.

Show us the output you are hoping to get.

Tell us what operating system you're using.

Tell us what shell you're using to run your script(s).

This is all very basic information that is needed to diagnose your problem. Please help us help you.

my script is of 230 lines including email.
shall i post whole script here?

and in side my script i am calling other .jmx script also and my script send result on the basis of out put from that script.

which is fine and run as expected which i run

Code:

sh -x script.sh

but when i schedule in cron it mess it up. it post old data also with time and data.
it is keeping old data some where is buffer.

i am using SUNOS

output in email, can i attach the same here?
i am using bash