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Full Discussion: If condition
Top Forums Shell Programming and Scripting If condition Post 302272578 by Panos1962 on Wednesday 31st of December 2008 02:55:30 AM
Old 12-31-2008
Actually this is a pipeline consisting of two components (mysqldump and gzip). The success of this pipeline depends in the success of the two programs; either mysqldump may fail or gzip (or both ofcourse). It's better to rewrite these lines as follows:

Code:
set -o pipefail
mysqldump -u $USER -p$PASS $DB | gzip -9>/home/backup1/today_sme-$DATE.sql.gz
if [ $? -ne 0 ]; then
    blabla
else
    blabla
fi

The pipefail bash option is controlling the exit status of a pipeline (read the manual pages for bash). Of course the two components must be written correctly from their authors (exiting with non zero exit statuses when failures occur).
 

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LEARN ABOUT CENTOS

glactiveshaderprogram

GLACTIVESHADERPROGRA(3G)					   OpenGL Manual					  GLACTIVESHADERPROGRA(3G)

NAME

       glActiveShaderProgram - set the active program object for a program pipeline object

C SPECIFICATION

       void glActiveShaderProgram(GLuint pipeline, GLuint program);

PARAMETERS

       pipeline
	   Specifies the program pipeline object to set the active program object for.

       program
	   Specifies the program object to set as the active program pipeline object pipeline.

DESCRIPTION

       glActiveShaderProgram sets the linked program named by program to be the active program for the program pipeline object pipeline. The
       active program in the active program pipeline object is the target of calls to glUniform() when no program has been made current through a
       call to glUseProgram().

ERRORS

       GL_INVALID_OPERATION is generated if pipeline is not a name previously returned from a call to glGenProgramPipelines() or if such a name
       has been deleted by a call to glDeleteProgramPipelines().

       GL_INVALID_OPERATION is generated if program refers to a program object that has not been successfully linked.

SEE ALSO

       glGenProgramPipelines(), glDeleteProgramPipelines(), glIsProgramPipeline(), glUseProgram(), glUniform()

COPYRIGHT

       Copyright (C) 2010 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication
       License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

AUTHORS

       opengl.org

opengl.org							    06/10/2014						  GLACTIVESHADERPROGRA(3G)
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