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Full Discussion: Shell script process remains after "exit 1"
Top Forums Shell Programming and Scripting Shell script process remains after "exit 1" Post 302249442 by Squeakygoose on Tuesday 21st of October 2008 10:42:43 AM
Old 10-21-2008
ok, a little more diagnosis:

The Y flag on the script is to indicate whether the dump should be compressed via pipe. executing the script with: "/u01/ct_scr/export.sh TAXTST FULL N" exits just fine.

Here's the code for $3=Y:
Code:
if [ ${compress} = Y ]
then

        pipe_name=${exp_loc}/compress_${ORACLE_SID}_${schema_name:-FULL}_${today}_p

        # remove any existing pipe
        rm -f ${pipe_name}

        # Make a new pipe
        /bin/mknod ${pipe_name} p

        # initiate compression process on the new pipe to run in the background
        gzip -c < ${pipe_name} > ${exp_file}.gz &

        # Re-direct export output to the pipe
        exp_file=${pipe_name}

fi

I also included a cleanup function which is called before the exit 1:

Code:
cleanup()
{
if [ ${compress:-N} = Y ]
then
        rm -f ${pipe_name}
fi
}

The pipe and background gzip command are gone once the script ends but maybe the script doesn't know that and hangs around?

Let me know if I've confused the heck out of you. I'd post the whole script but it's kinda long...
 

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LEARN ABOUT SUSE

wimax_msg_alloc

WIMAX_MSG_ALLOC(9)						 Linux Networking						WIMAX_MSG_ALLOC(9)

NAME

       wimax_msg_alloc - Create a new skb for sending a message to userspace

SYNOPSIS

       struct sk_buff * wimax_msg_alloc(struct wimax_dev * wimax_dev, const char * pipe_name, const void * msg, size_t size, gfp_t gfp_flags);

ARGUMENTS

       wimax_dev
	   WiMAX device descriptor

       pipe_name
	   "named pipe" the message will be sent to

       msg
	   pointer to the message data to send

       size
	   size of the message to send (in bytes), including the header.

       gfp_flags
	   flags for memory allocation.

RETURNS

       0 if ok, negative errno code on error

DESCRIPTION

       Allocates an skb that will contain the message to send to user space over the messaging pipe and initializes it, copying the payload.

       Once this call is done, you can deliver it with wimax_msg_send.

IMPORTANT

       Don't use skb_push/skb_pull/skb_reserve on the skb, as wimax_msg_send depends on skb->data being placed at the beginning of the user
       message.

       Unlike other WiMAX stack calls, this call can be used way early, even before wimax_dev_add is called, as long as the wimax_dev->net_dev
       pointer is set to point to a proper net_dev. This is so that drivers can use it early in case they need to send stuff around or communicate
       with user space.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010							WIMAX_MSG_ALLOC(9)
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