02-21-2005
looping process
I am not too understand shell script writing , could someone can help me ,
I want to have a shell script for testing , the process will run repeatly (looping), I want to test the CPU time , I have the below script to test :
while x=0
do
cp /tmp/abc.txt /tmp/def.txt
done
the process is non-stop running , but it is not fit my requirement , because the above script will generate a new process after the old process was completed , what I want is a SAME process is running a non-stop process (same PID ) ,
More clearly , I just want to have a script to run a process ( may be a looping ) , this process need to use the same PID . In my previous script , after the cp process finished , it will generate another process ( so the PID changed ) so not fit my requirement.
could someone can post the script ? thx in advance.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi,
Actually I have a file which consists data . for eg names.
Then I want my sql query to read this file and produce the output.
Currently I am using this
FOR EG : FILENAME is NAMES
for i in `cat NAMES`
{
sqlplus -s $CONNECTID << EOF
spool rooh
set heading off
select... (1 Reply)
Discussion started by: rooh
1 Replies
2. Shell Programming and Scripting
Hi
I have around 100 users in sun server and have default home directory in /usr/home/<username>
I want to clean their home directory time to time to make free space on root, as users generate many output files during usage of application.
My idea is, generate a file with following command... (4 Replies)
Discussion started by: ishir
4 Replies
3. Shell Programming and Scripting
I run into a issue when I try to do sorting of the following with ascending order, one round of for looping seems not working, anyone knows how to use shell or perl?
$array = (5,0,3,2,7,9,8) (2 Replies)
Discussion started by: ccp
2 Replies
4. Shell Programming and Scripting
Hello, where can I get usefull information on the use of looping with for , if and while with extensive examples.
Also use of variables in scripts (1 Reply)
Discussion started by: sam4now
1 Replies
5. Shell Programming and Scripting
vesselNames values:
xxx
yyy
zzz
vesselPlanned values:
xxx
zzz
zzz
zzz
OIFS=""
OIFS=$IFS
IFS="\n" (2 Replies)
Discussion started by: finalight
2 Replies
6. Shell Programming and Scripting
Hi,
Now I have written a script which sorts the records in the file and splits them according to some condition.
Now, I need to modify the script so that it reads all the files one after the other and does the sorting & splitting.
Pls help me in reading all the files in a directory and... (8 Replies)
Discussion started by: Sunitha_edi82
8 Replies
7. UNIX for Dummies Questions & Answers
I am looking for a way to kill 2 processes from a user through some kind of script.
Using an oracle script, I get two process ids that need to be killed.
SQL> select ssn.process as client_process_id, pcs.spid as oracle_process_id, ssn.sid, ssn.serial#
2 from v$session ssn inner join... (5 Replies)
Discussion started by: Meert
5 Replies
8. Shell Programming and Scripting
Hi evryone
i need a help .
i have a file xcv.the content is :
accelerate
i want a script which will run 1000 times in loop and changing the value to
accelerate to
acceler
in 1st loop and in 2nd loop it will be again
accelerate and so on . (6 Replies)
Discussion started by: Aditya.Gurgaon
6 Replies
9. Shell Programming and Scripting
Hi Gurus,
t=`ps -u irb|grep -v grep|grep BSNL_PAYMENT_C`
echo $t
if
then
echo $?
echo "Process Creation is Running ...."
else
echo "Process went down at $dat $tim"
fi
How would i use loop so that the script continously checks for the current status of this process.... (1 Reply)
Discussion started by: ankitknit
1 Replies
10. Shell Programming and Scripting
Hey guys, so I am trying to do a loop script that will go through each folder (no gui so just each domain has a folder) and grab out the databases being used on that domain. I know I would use
mysql -e "show databases where not 'information_schema';" once in each directory to pull the actual... (3 Replies)
Discussion started by: dough
3 Replies
LEARN ABOUT CENTOS
pppoe-connect
PPPOE-CONNECT(8) System Manager's Manual PPPOE-CONNECT(8)
NAME
pppoe-connect - Shell script to manage a PPPoE link
SYNOPSIS
pppoe-connect [config_file]
pppoe-connect interface user [config_file]
DESCRIPTION
pppoe-connect is a shell script which manages a PPPoE connection using the Roaring Penguin user-space PPPoE client. If you omit con-
fig_file, the default file /etc/sysconfig/network-scripts/ifcfg-ppp0 is used. If you supply interface and user, then they override the
Ethernet interface and user-name settings in the configuration file.
Note that normally, you should not invoke pppoe-connect directly. Instead, use pppoe-start to bring up the PPPoE connection.
pppoe-connect first reads a configuration file. It then brings up a PPPoE connection. If the connection ever drops, a message is logged
to syslog, and pppoe-connect re-establishes the connection. In addition, each time the connection is dropped or cannot be established,
pppoe-connect executes the script /etc/ppp/pppoe-lost if it exists and is executable.
The shell script pppoe-stop causes pppoe-connect to break out of its loop, bring the connection down, and exit.
TECHNICAL DETAILS
pppoe-connect uses the following shell variables from the configuration file:
ETH The Ethernet interface connected to the DSL modem (for example, eth0).
USER The PPPoE user-id (for example, b1xxnxnx@sympatico.ca).
PIDFILE
A file in which to write the process-ID of the pppoe-connect process (for example, /var/run/pppoe.pid). Two additional files ($PID-
FILE.pppd and $PIDFILE.pppoe) hold the process-ID's of the pppd and pppoe processes, respectively.
By using different configuration files with different PIDFILE settings, you can manage multiple PPPoE connections. Just specify the con-
figuration file as an argument to pppoe-start and pppoe-stop.
AUTHOR
pppoe-connect was written by David F. Skoll <dfs@roaringpenguin.com>.
The pppoe home page is http://www.roaringpenguin.com/pppoe/.
SEE ALSO
pppoe(8), pppoe-start(8), pppoe-stop(8), pppd(8), pppoe.conf(5), pppoe-setup(8), pppoe-status(8), pppoe-sniff(8), pppoe-server(8), pppoe-
relay(8)
4th Berkeley Distribution 21 February 2000 PPPOE-CONNECT(8)