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Top Forums Shell Programming and Scripting Export variable, as a background process Post 302447775 by radoulov on Tuesday 24th of August 2010 09:34:47 AM
Old 08-24-2010
What shell you're using? ksh93 and zsh support coprocesses.

This is with dtksh (/usr/dt/bin/dtksh)on Solaris:

Code:
$ unset v
$ sqlplus -s / as sysdba<<-! |&
  set feed off pages 0
  exec dbms_lock.sleep(5);
  select sysdate from dual;
!> > > >
[1]     20027
$ read -p v
$
[1] +  Done    sqlplus -s / as sysdba<<-! |& ;  set feed off pages 0;  exec dbms_lock.sleep(5);;  select sysdate from dual;;!
$ echo "$v"
24-AUG-10



---------- Post updated at 03:34 PM ---------- Previous update was at 03:32 PM ----------

Another option is to use expect as a wrapper, to set a timeout for the process.

Last edited by radoulov; 08-24-2010 at 11:01 AM..
This User Gave Thanks to radoulov For This Post:
 

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getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME
getusershell, setusershell, endusershell - get legal user shells SYNOPSIS
#include <unistd.h> char *getusershell(void); void setusershell(void); void endusershell(void); DESCRIPTION
The getusershell() function returns a pointer to a legal user shell as defined by the system manager in the file /etc/shells. If /etc/shells does not exist, the following locations of the standard system shells are used in its place: /bin/bash /bin/csh /bin/jsh /bin/ksh /bin/pfcsh /bin/pfksh /bin/pfsh /bin/sh /bin/tcsh /bin/zsh /sbin/jsh /sbin/pfsh /sbin/sh /usr/bin/bash /usr/bin/csh /usr/bin/jsh /usr/bin/ksh /usr/bin/pfcsh /usr/bin/pfksh /usr/bin/pfsh /usr/bin/sh /usr/bin/tcsh /usr/bin/zsh /usr/xpg4/bin/sh The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells. The setusershell() function rewinds the file or the list. The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells. RETURN VALUES
The getusershell() function returns a null pointer on EOF. BUGS
All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved. SunOS 5.10 30 Aug 2004 getusershell(3C)
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