[SOLVED] How to switch users & echo script outputs using shell script

rajthampi · 06-22-2015, 07:08 AM

Hi guys
I want to build a shell script like following

#!/bin/sh
# Change user to applmgr
su - applmgr
#change to a exported directory
cd $D
#run a script to stop the apps instance
./adstpall.sh apps/apps
#echo the script outputs to the user
#check whether a particular process called FNDLBR has no running processes
#then switch to another user called oracle
su- oracle
#change to a exported directory
cd $D
#run a script to shutdown listener process
./addlnctl.sh stop PROD
#Check whether the listener process is successfully terminated
#then shutdown the database
./addbctl.sh stop immediate
#Check the status and echo
echo "All Done"

Please help

regards,

translator1111 · 06-22-2015, 07:26 AM

Dear rajthampi,
you have already built the script, what kind of help are you looking for?
Regards,
M.

rajthampi · 06-22-2015, 01:22 PM

Quote:

Originally Posted by translator1111

Dear rajthampi,
you have already built the script, what kind of help are you looking for?
Regards,
M.

Hello there
My problem is, I am running this script as root, the su - switches the user, however unless I execute exit, rest of the commands like switching to the script directory doesn't happen.

What I want to do is, switch the user, then switch the directory.

Regards and thanks

suicidaleggroll · 06-22-2015, 01:40 PM

That's because you need the "-c" flag in su, which tells it to switch users and run a command. You may need to split the script up into a few different parts, one per user, and call them with -c. So the main script would look like:

Code:

#!/bin/sh

su applmgr -c "script_2.sh $D"
su oracle -c "script_3.sh $D"
echo "All Done"

then script_2.sh:

Code:

#!/bin/sh
cd $1
./adstpall.sh apps/apps

and script_3.sh:

Code:

#!/bin/sh
cd $1
./addlnctl.sh stop PROD
./addbctl.sh stop immediate

Or some variant of that.

Habitual · 06-22-2015, 01:51 PM

Have a look at http://serverfault.com/questions/444...different-user

rajthampi · 06-22-2015, 02:20 PM

Quote:

Originally Posted by suicidaleggroll

That's because you need the "-c" flag in su, which tells it to switch users and run a command. You may need to split the script up into a few different parts, one per user, and call them with -c. So the main script would look like:

Code:

#!/bin/sh

su applmgr -c "script_2.sh $D"
su oracle -c "script_3.sh $D"
echo "All Done"

then script_2.sh:

Code:

#!/bin/sh
cd $1
./adstpall.sh apps/apps

and script_3.sh:

Code:

#!/bin/sh
cd $1
./addlnctl.sh stop PROD
./addbctl.sh stop immediate

Or some variant of that.

Hi suicidaleggroll

Thank you very much. I'll sure try the examples provided by you & post the results.

regards,

rajthampi · 06-22-2015, 02:22 PM

Quote:

Originally Posted by Habitual

Have a look at http://serverfault.com/questions/444...different-user

Hello Habitual

I've gone through the above provided link, yet was somehow obsessed with doing "everything" using a single .sh file. I think it is too much for a newbie like me to demand in very beginning itself

Anyway thank you very much the response.

regards,

rajthampi · 06-25-2015, 02:49 PM

Hello guys

Finally I cooked up something, that just does my job. I used some codes from serverfault.com thread in addition to the suggestions received here.

Here comes the script

Code:

#!/bin/sh

su - applprod -c "/u01/applprod/PROD/inst/apps/PRODBAK_erp-prodbak/admin/scripts/adstpall.sh apps/apps"

#http://stackoverflow.com/questions/7...h-shell-script


# PROCESS_NUM=$(ps -ef | grep "$1" | grep -v "grep" | wc -l)

PROCESS_NUM=$(ps -ef | grep "FNDLIBR" | wc -l)

echo "$PROCESS_NUM Concurrent Programs are running right now, you should wait for the jobs to finish prior shutting down the database"



check_process() {
  echo "$ts: checking $1"
  [ "$1" = "" ]  && return 0
  [ `pgrep -n $1` ] && return 1 || return 0
}


while [ 1 ]; do 
  # timestamp
  ts=`date +%T`
  echo "$ts: begin checking..."
  check_process "FNDLIBR"
  
 # [ $? -eq 0 ] && echo "$ts: not running, restarting..." && `dropbox start -i > /dev/null`
	[ $? -eq 0 ] && echo "$ts: No more concurrent programs running." && break
  sleep 60
done


echo "All Pending Concurrent Programs are closed now, going ahead with Database Shutdown"

su - oraprod -c "/u01/oraprod/PROD/db/tech_st/10.2.0/appsutil/scripts/PRODBAK_erp-prodbak/addlnctl.sh stop PRODBAK"
su - oraprod -c "/u01/oraprod/PROD/db/tech_st/10.2.0/appsutil/scripts/PRODBAK_erp-prodbak/addbctl.sh stop immediate"

echo "Database shutdown completed! All Done!!"

Thank you all!

regards,