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Full Discussion: Error re-direction and Return code
Top Forums Shell Programming and Scripting Error re-direction and Return code Post 302942406 by wahi80 on Tuesday 28th of April 2015 01:30:55 PM
Old 04-28-2015
Error re-direction and Return code
Hi,

I have a shell script which executes some sql. When the shell script executes the sql's logging is shown on the console. I need to grep some data from this output shown on console. So I do the following

Code:
hive -f load.adj.hql 2>&1 | tee c.txt
echo $?
A=`grep num_rows c.txt`

$? will again always be 0 whether load.adj.hql passes or fails.
How do I make $? reflect status of hive -f load.adj.hql BUT also capture output on console?

---------- Post updated at 12:30 PM ---------- Previous update was at 12:22 PM ----------

I got the answer
Code:
echo ${PIPESTATUS[0]}

This User Gave Thanks to wahi80 For This Post:
jim mcnamara
 

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LEARN ABOUT BSD

makedev

MAKEDEV(8)						      System Manager's Manual							MAKEDEV(8)

NAME

       makedev - make system special files

SYNOPSIS

       /dev/MAKEDEV device...

DESCRIPTION

       MAKEDEV is a shell script normally used to install special files.  It resides in the /dev directory, as this is the normal location of spe-
       cial files.  Arguments to MAKEDEV are usually of the form device-name?  where device-name is one of the supported devices listed in section
       4  of  the  manual and ``?'' is a logical unit number (0-9).  A few special arguments create assorted collections of devices and are listed
       below.

       std    Create the standard devices for the system; e.g. /dev/console, /dev/tty.	The VAX-11/780 console	floppy	device,  /dev/floppy,  and
	      VAX-11/750 and VAX-11/730 console cassette device(s), /dev/tu?, are also created with this entry.

       local  Create  those  devices specific to the local site.  This request causes the shell file /dev/MAKEDEV.local to be executed.  Site spe-
	      cific commands, such as those used to setup dialup lines as ``ttyd?'' should be included in this file.

       Since all devices are created using mknod(8), this shell script is useful only to the super-user.

DIAGNOSTICS

       Either self-explanatory, or generated by one of the programs called from the script.  Use ``sh -x MAKEDEV'' in case of trouble.

SEE ALSO

       intro(4), config(8), mknod(8)

4.2 Berkeley Distribution					   May 19, 1986 							MAKEDEV(8)
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