Shell Programming and Scripting

Code:

kill -9 $IND_PID 2>/dev/null

The current script is:

[root@cntos5 ~]# cat jreinstall.sh
function ind {
while : ; do
printf "."
sleep 1
done
}
printf "jre installation started"
ind &
IND_PID=$!
mv /bin/more /bin/more1
/root/jre-6u16-linux-i586.bin << EOF &> /dev/null && mv /bin/more1 /bin/more;rm -f /root/jre-6u16-linux-i586.bin
yes
EOF
kill -9 $IND_PID 2> /dev/null
printf "\njre installation complete"

and in debugging mode:

[root@cntos5 ~]# sh -x jreinstall.sh
+ printf 'jre installation started'
jre installation started+ ind
+ :
+ printf .
.+ sleep 1
+ IND_PID=10580
+ mv /bin/more /bin/more1
mv: cannot stat `/bin/more': No such file or directory
+ /root/jre-6u16-linux-i586.bin
+ :
+ printf .
.+ sleep 1
+ :
+ printf .
.+ sleep 1
+ :
+ printf .
.+ sleep 1
+ :
+ printf .
.+ sleep 1
+ :
+ printf .
.+ sleep 1
+ :
+ printf .
.+ sleep 1
+ :
+ printf .
.+ sleep 1
+ :
+ printf .
.+ sleep 1
+ :
+ printf .
.+ sleep 1
+ :
+ printf .
.+ sleep 1
+ :
+ printf .
.+ sleep 1
+ mv /bin/more1 /bin/more
+ rm -f /root/jre-6u16-linux-i586.bin
+ kill -9 10580
+ printf '\njre installation complete'

jre installation completejreinstall.sh: line 16: 10580 Killed ind

I have also tried &> but to no avail.
From the output of "sh -x jreinstall.sh" its pretty clear that this redirection is having no effect? isn't it

try simply:

Code:

kill $IND_PID

or in case even that does not work:

Code:

kill $IND_PID >/dev/null 2>&1

ya....... its working now

kill -9 seems to be the problem element. but still wondering why?
any idea guys?

Thanks for the help

which OS??
In AIX kill -9 won't give such error
and simply kill means

Yes but it is not really good practice to use kill -9, only as a last resort. kill -9 doesn't give the background process a chance to die properly and perhaps this triggers certain error conditions or alerts in the OP's environment. A simple kill will send a regular terminate signal allowing the background process to terminate gracefully.

I am using centos 5.3

The problem still persists even after using kill $IND_PID >/dev/null 2>&1

The output being:

jre installation started.........../jreinstall.sh: line 15: 13513 Terminated ind
jre installation complete

Another thing that i noticed is that if i run the script for the first time in a new system the output "jreinstall.sh: line 15: 13513 Terminated ind"
is not appearing. From the 2nd time onwards the problem is arising. I have tested the same in three systems and the same occurred everywhere. Really puzzled ......

---------- Post updated at 10:44 PM ---------- Previous update was at 10:42 PM ----------

If i give you access to my system then you people could check it yourself.

---------- Post updated at 11:00 PM ---------- Previous update was at 10:44 PM ----------

See the below output when i run script two consecutive times:

[root@cntos5 ~]# ./jreinstall.sh
jre installation started.........jre installation complete

[root@cntos5 ~]# ./jreinstall.sh
jre installation started............jre installation complete
./jreinstall.sh: line 16: 14583 Terminated ind

First time the problem didn't arise, 2nd time it surfaced.