Hello All,

I wud like to know how can i grep a word in a file.
For example : like to find 87 ....

so result shud give me 87 ..not 1487 or 98771.

Also, Please tell me a way to find out the completion of background processes.

Any help wud be appreciated.

thanx in advance

--Pooja

try using -w option
e.g. grep -w 87 filename

sushant

Completion on background process ...

pooja, Can you elaborate a bit on what you need

Cheers
Sathyaram

Hello Sathyaram,

My requirement is, i am sending something for background processing and dependent on its completion i wud like to proceed further.

At present what i am doing is , i am taking the process ids of background processes intiated in a file .Then using this command,

var=ps -ef | egrep -c -f <file which contains process ids for background proceses>

and checking till var != 0
(I am sure there will be much better ways to do this.)

Here i am facing a problem,

egrep is doing a pattern searching , i want to find full word not the part of word.

Also, if there is better way to do this , please tell me

thanx in advance.

--Pooja

Hi sushant,

thanx, its working

--Pooja

Use the 'wait' command. You can give it a pid but it's esier to use the job id.

e.g.

sleep 5 &
wait 1
echo Done waiting

HTH

thanx

but i am sending 10 jobs in background .Please advice .

--Pooja

If you were to use 'wait' in this instance, I would suggest using the pid rather than the job id. Get the pid using ps + awk/sed/grep/cut (or whatever).

That said, if it's going to get complicated, I would have each background process write to a file on completion and have a daemon/loop to check that file for the status of each background process before kicking off the next process.

thanx,

at present what i am doing is, i am writing the PID into a file when i send a job in background and after sending all the required jobs in background i am checking the system if any PID exists there, for this i am using a while loop
while var>0
do
var=ps-ef -o pid | grep -cw -f filewithpid
wait 60
done


--Pooja

Hi Pooja.

I'm not sure what the 'wait 60' is doing, I think you mean 'sleep 60'.

The only problem I can see with how you have implemented your solution would be if one of your processes failed. The pid would no longer exist, so your dependent process would kick-off!