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Full Discussion: standard error to standard out question
Top Forums Shell Programming and Scripting standard error to standard out question Post 302318772 by pludi on Friday 22nd of May 2009 08:22:44 AM
Old 05-22-2009
You're setting up redirection for that command, while the message is sent by the shell. You can either redirect that too by using exec, or you can do it the smart way:
Code:
if [ -x /path/to/zfs ]
then
    zfs list | grep ...
    ...
else
    # Whatever to be done if zfs isn't there
fi

By the way, grep knows the -q switch, which only sets $? based on whether the term is found or not, and produces no additional output.
 

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LEARN ABOUT DEBIAN

zstreamdump

zstreamdump(8)						  System Administration Commands					    zstreamdump(8)

NAME

       zstreamdump - filter data in zfs send stream

SYNOPSIS

       zstreamdump [-C] [-v]

DESCRIPTION

       The  zstreamdump  utility  reads  from the output of the zfs send command, then displays headers and some statistics from that output.  See
       zfs(1M).

OPTIONS

       The following options are supported:

       -C

	   Suppress the validation of checksums.

       -v

	   Verbose. Dump all headers, not only begin and end headers.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWzfsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Uncommitted		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       zfs(1M), attributes(5)

SunOS 5.11							    21 Sep 2009 						    zstreamdump(8)
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