Below is a test script to illustrate a problem from a larger script I am writing.
When I run this I receive the following output in /var/log/syslog.
Specifically I cannot understand where the "File descriptor 62 left open" and "File descriptor 63 left open" errors are coming from. Also the script hangs until I press enter.
I have done research but I am finding it difficult to understand whether these errors are related to lvm, syslog or something I am doing wrong in bash? let alone how to close the file descriptors properly.
---------- Post updated at 06:12 PM ---------- Previous update was at 12:01 PM ----------
I can now prevent the errors and know that the descriptors are from "logger" but I still do not understand it.
I added "62>&- 63>&-" to the end of each command and this resolves the errors e.g.
But what if the file descriptors where to change? How can I identify the relevant file descriptors and then close them? Do I need to even be concerned as they appear to close anyway?
Hi,
I have written a daemon process, to perform certain operations in the background.
For this I have to close, the open file descriptors,
Does anybody know how to find out the number of open file descriptors ?
Thanks in Advance,
Sheetal (2 Replies)
Hello all,
A few questions on file descriptors ...
scenario : Sun Ultra 30 with Sun OS 5.5.1 , E250 with Solaris 2.6
In one of my servers, the file descriptor status from the soft limit and hard limits are 64 and 1024 respectively for root user.
Is the soft limit (64) represents the... (3 Replies)
i m trying to learn processes in unix and i've been reading this but i don't quite get it. its regarding file descriptors. : each is a part of file pointers, they point to another area. indexes into an Operating system maintained table called "file descriptor table". one table per process. may... (3 Replies)
I have set the maximum no of file descriptors open in a process to the value 8192 using the following lines
set rlim_fd_max=8192
set rlim_fd_cur=8192
in the /etc/system file.
I rebooted the machine and the command ulimit -n / -Hn both display the limits as 8192. However when I run my... (2 Replies)
Hi!
I currently run a very long script (two hour left...) on a remote computer through a ssh session. I wonder whats happend if I close the ssh session, or even, the terminal. Is the script running on remote will stop?
Thanks for your answers,
Tp (1 Reply)
Hello,
I have a Bash script that processes a text file so that the existing file will look something like this:
/www/repository/2010/201002231329532/LTLO_0407.pdf
/www/repository/2010/201002231329532/LTLO_0507.pdf
/www/repository/2010/201002231329532/LTLO_0607.pdf... (1 Reply)
Hi guys,
i need to write a shell script that will close file descriptors from /proc/pid/fd
will calling exec 4<&- solve the problem ?
thanks in advance :) (15 Replies)
I am running a process in nohup .
nohup getkeys.ksh 132 > 132.out &
When I close the putty terminal,The process is getting killed .
default_signal_handler called for signal no: 1
Is there a way to keep the process running even If I close the terminal (2 Replies)
Cygwin bash script was invoked in bash shell as follows:
/cygdrive/c/cygwin/bin/bash test.sh
This is content of my script
#!/bin/bash
#
exec 3</cygdrive/c/cygwin/home/work/part1.txt
read -u 3 x
echo $x
exec 3<&-
Commands work correctly when issued one at a time within bash shell.... (2 Replies)
Discussion started by: joed270
2 Replies
LEARN ABOUT DEBIAN
xsil2graphics
XSIL2GRAPHICS(1) User Contributed Perl Documentation XSIL2GRAPHICS(1)NAME
xsil2graphics - generate scripts to load xsil output data files
SYNOPSIS
xsil2graphics [options] <xsil_file>
DESCRIPTION
Utility program bundled with xmds, used to generate scripts that load simulation output data into either matlab (http://www.mathworks.com)
or scilab (http://www.scilab.org), which are then used to manipulate the results further if necessary and then to present the results
graphically.
Matlab
To generate a matlab m-file, from the xsil file data_file.xsil use the command:
bash$ xsil2graphics data_file.xsil
or
bash$ xsil2graphics --matlab data_file.xsil
Then at the matlab command prompt:
>> data_file
Scilab
To generate a scilab script file, from the xsil file data_file.xsil use the command:
bash$ xsil2graphics --scilab data_file.xsil
Then at the scilab command prompt:
--> exec('data_file.sci')
OPTIONS -m, --matlab generate matlab m-file script to load data from the xsil data file (the default option)
-s, -scilab generate scilab script file to load data from the xsil data file
-o, --outfile <out_file> specify an alternative output script filename to the default which is the input xsil filename with the .xsil
extension changed to either .m for the matlab m-file or .sci for the scilab script file
EXAMPLES
bash$ xsil2graphics nlse.xsil
Generates the output nlse.m to load the data into matlab
bash$ xsil2graphics -m nlse.xsil
Also generates the output nlse.m but explicitly sets matlab to be the output format
bash$ xsil2graphics --scilab nlse.xsil
Generates the output nlse.sci to load the data into scilab
bash$ xsil2graphics --outfile nlse_new.m nlse.xsil
Generates the output nlse_new.m to load the data into matlab
AUTHORS
Originally written by Greg Collecutt
Maintained by Paul Cochrane with code contributed by Joe Hope
BUGS
No known bugs.
SEE ALSO xmds(1), loadxsil(1)
http://www.xmds.org
COPYRIGHT
Copyright (C) 2000-2004
Code contributed by Greg Collecutt, Joseph Hope and Paul Cochrane
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER-
CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
perl v5.8.2 2004-06-21 XSIL2GRAPHICS(1)