Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: output and error redirection
Top Forums Shell Programming and Scripting output and error redirection Post 302344963 by jpriyank on Tuesday 18th of August 2009 05:44:27 AM
Old 08-18-2009
Data output and error redirection
hi Smilie

if condition >&- 2>&-

Can anybody explain the redirection in above command


Thanks in advance
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

redirection of ladebug output

i am using a command line ladebug debugger. i want to redirect the responses of the debugger to a text file but run args > output-file syntax does not successful because it redirects only the standard out of the binary that i am examining, but i want the debuggers own responses like "stopped... (2 Replies)
Discussion started by: yakari
2 Replies

2. UNIX for Dummies Questions & Answers

output redirection in scripts

I am trying to write a script that will remove any line in 2 given text files starting with '-'. the output should be to the second file. this is what I tried: #!/bin/csh -f cat $1 $2 | grep -v '^-' > $2 the problem is the after executing the script, file2 contains only the lines from... (7 Replies)
Discussion started by: stewie griffin
7 Replies

3. Shell Programming and Scripting

redirection output in two files

I want to redirect output of my script to two logfiles. I tried this : ./run.sh -c APP | tee >(grep " " > AppLogs.log) >(grep "XYZ" > xyz.log) >dev/null but this does not solve my purpose because logfile xyz.log remains empty untill i stop my script, i want both files, AppLogs.log and... (4 Replies)
Discussion started by: cmdup
4 Replies

4. Shell Programming and Scripting

redirection and output

I'm redirecting the output of a command to a logfile, however, if the user is on a terminal I would also like the output to be displayed on the screen. tar tvf some_tarfile >Logfile if the user is on a term then have the output to the Logfile and also be displayed on the screen at the same... (2 Replies)
Discussion started by: nck
2 Replies

5. Shell Programming and Scripting

Redirection output

Hi there I have a script that runs but it outputs everything onto the screen instead of a file. I've tried using the > outputfile.txt however all it does is dump the output to the screen and creates an outputfile.txt but doesn't put anything in that file. Any help would be appreciated ... (6 Replies)
Discussion started by: kma07
6 Replies

6. Shell Programming and Scripting

Output redirection

We have an application here that does some table queries and then prints the result on screen. I do not have the code of this application (which i will just call "queryCommand"), but what it does is that you call it with some parameters and it prints some info about the query and then the... (5 Replies)
Discussion started by: jolateh
5 Replies

7. UNIX for Dummies Questions & Answers

Output redirection

Hello i am trying to write a script that will redirect the output to a certain file. Here is the code so far: #!/bin/bash ps -e | sort | more > psfile When I execute the script nothing happens since i assume the output was redirected to the file called psfile. When I try to look at the... (1 Reply)
Discussion started by: mfruiz34
1 Replies

8. Shell Programming and Scripting

Redirection of ls -l output

Hi I am making a script where i want to redirect the output of ls -l to a file Example #ls -l fil1.txt > /opt/temp/a.txt ac: No such file or directory I want to capture output of this command like here output is ac: No such file or directory can anyone help (4 Replies)
Discussion started by: anish19
4 Replies

9. Shell Programming and Scripting

output redirection

Hi all I was wondering if there was a slicker way of doing this without the file - awk '{print $2}' FS=":" "${FILE}" > "${TMPFILE}" { read M_GRP_ID || m_fail 1 "Error: Read failed 1 (${FUNCNAME})" read M_GRP_WAIT || m_fail 1 "Error: Read failed 2 (${FUNCNAME})" }... (6 Replies)
Discussion started by: steadyonabix
6 Replies

10. Shell Programming and Scripting

Conditional output redirection

Hi there, I'm in a coding mood! I've come through many ways of conditionally redirect the output of a script like: ] || exec &> /dev/nullBut my goal is slightly different. I would like to conditionally redirect the output of a command depending on the status of the command itself: if !... (6 Replies)
Discussion started by: chebarbudo
6 Replies

LEARN ABOUT OSX

glfencesync

GLFENCESYNC(3G) 						    OpenGL 3.3							   GLFENCESYNC(3G)

NAME

       glFenceSync - create a new sync object and insert it into the GL command stream

C SPECIFICATION

       GLsync glFenceSync(GLenum condition, GLbitfield flags);

PARAMETERS

       condition
	   Specifies the condition that must be met to set the sync object's state to signaled.  condition must be GL_SYNC_GPU_COMMANDS_COMPLETE.

       flags
	   Specifies a bitwise combination of flags controlling the behavior of the sync object. No flags are presently defined for this operation
	   and flags must be zero.[1]

DESCRIPTION

       glFenceSync creates a new fence sync object, inserts a fence command into the GL command stream and associates it with that sync object,
       and returns a non-zero name corresponding to the sync object.

       When the specified condition of the sync object is satisfied by the fence command, the sync object is signaled by the GL, causing any
       glWaitSync(), glClientWaitSync() commands blocking in sync to unblock. No other state is affected by glFenceSync or by the execution of the
       associated fence command.

       condition must be GL_SYNC_GPU_COMMANDS_COMPLETE. This condition is satisfied by completion of the fence command corresponding to the sync
       object and all preceding commands in the same command stream. The sync object will not be signaled until all effects from these commands on
       GL client and server state and the framebuffer are fully realized. Note that completion of the fence command occurs once the state of the
       corresponding sync object has been changed, but commands waiting on that sync object may not be unblocked until after the fence command
       completes.

NOTES

       glFenceSync is only supported if the GL version is 3.2 or greater, or if
		   the ARB_sync extension is supported.
	   .SH "ERRORS"

       GL_INVALID_ENUM is generated if condition is not GL_SYNC_GPU_COMMANDS_COMPLETE.

       GL_INVALID_VALUE is generated if flags is not zero.

       Additionally, if glFenceSync fails, it will return zero.

SEE ALSO

       glDeleteSync(), glGetSync(), glWaitSync(), glClientWaitSync()

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/.

NOTES

	1.

	   flags is a placeholder for anticipated future extensions of fence sync object capabilities.

OpenGL 3.3							    03/08/2011							   GLFENCESYNC(3G)
All times are GMT -4. The time now is 02:04 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy