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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 OPENSOLARIS

filebench

filebench(1)							   User Commands						      filebench(1)

NAME

       filebench - framework of workloads to measure and compare filesystem performance

SYNOPSIS

       /usr/benchmarks/filebench/bin/filebench profile

       /usr/benchmarks/filebench/bin/filebench -c stats_dir...

DESCRIPTION

       filebench runs workloads to measure and compare filesystem performance.

       Full documentation can be found at the performance community at: http://www.opensolaris.org

OPTIONS

       The following options are supported:

       -c stats_dir...	  Generates  a HTML file (index.html) that is a comparison of the specified directories. stats_dir specifies the directory
			  or directories in which the results are stored.

OPERANDS

       The following operands are supported:

       profile	  Specifies the name of the configuration file ending in .prof. The configuration file specifies:

		      o      what workloads to run,

		      o      what parameters to run,

		      o      the directory path on which to operate, and

		      o      the directory path in which to store the results.

EXIT STATUS

       The following exit values are returned:

       0    Successful completion.

       1    An error occurred.

       2    Invalid command line options were specified.

EXAMPLES

       Example 1 Running the Multi-stream Sequential Read Workload

       The following example runs the workloads described in the configuration file named sqread.prof:

	 # filebench sqread

       Example 2 Comparing Multiple Runs

       The following example compares the results of two previous runs.

       This example assumes that the results from the two previous  filebench  runs  were  located  in	the  directories:  /stats/wombat-zfs-noel-
       Jun_27_2007-15h_45m_33s and /stats/wombat-ufs-noel-Jun_27_2007-15h_52m_11s.

       This example generates a HTML file named index.html in your current working directory.

	 # filebench -c /stats/wombat-zfs-noel-Jun_27_2007-15h_45m_33s 
	       /stats/wombat-ufs-noel-Jun_27_2007-15h_52m_11s

ATTRIBUTES

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

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

SEE ALSO

       attributes(5)

SunOS 5.11							    9 Oct 2007							      filebench(1)
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