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Top Forums UNIX for Advanced & Expert Users problem with redirect stdout to file Post 302098712 by vino on Wednesday 6th of December 2006 06:25:48 AM
Old 12-06-2006
We ran into the same problem the other day in one of our scripts.

You need to change your $fname to ${fname}

Look at this script to see the behaviour.

Code:
[/tmp]$ cat try.sh
#! /bin/sh

a=12
b=34
echo $a_$b
echo ${a}_$b
[/tmp]$ sh try.sh
34
12_34
[tmp]$

From man sh

Code:
       ${parameter}
              The value of parameter is substituted.  The braces  are  required
              when  parameter  is  a  positional  parameter  with more than one
              digit, or when parameter is followed by a character which is  not
              to be interpreted as part of its name.


Last edited by vino; 12-06-2006 at 07:32 AM..
 

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APSPREVIEW(1)						    BSD General Commands Manual 					     APSPREVIEW(1)

NAME
apspreview -- preview PostScript file(s) as generated by apsfilter SYNOPSIS
apspreview [-Pqueue] [-Zoptions] [input...] apspreview [-h] DESCRIPTION
With apspreview you can create a PostScript representation of the file(s) you are about to print in order to check it before actually print- ing. Your file(s) will be converted to PostScript according to the queue specific configuration, and afterwards you will be able to print all or some pages from your PostScript viewer application (gv, kghostview or ghostview). OPTIONS
-h show help screen -Pqueue select a printer queue (different from the default one) -Zoptions use apsfilter command line options (comma-separated list) input... input file(s) [default: stdin] NOTES
If you use the -P option, please remember to pass the same printer queue on to the lpr(1) command. Be careful if your printer queue configuration includes a setting to create multiple pages per sheet (PS_NUP=2, PS_NUP=4 or PS_NUP=8). In order to make sure that apsfilter(1) does not repeat n-up printing, use the 1pps command line option when actually printing the file. apspreview only works correctly with entries in /etc/printcap that have been created by /usr/share/apsfilter/SETUP. All configuration set- tings will be copied from the relevant apsfilterrc files. FILES
/etc/printcap printer capability data base /usr/share/apsfilter/bin/apsfilter apsfilter script /usr/bin/aps2file tool to save apsfilter output to a file SEE ALSO
apsfilter(1), aps2file(1), apsfilter-bug(1), apsfilterrc(5), printcap(5) BUGS
See apsfilter software center - http://www.apsfilter.org/ - for new versions, bugfixes and known bugs. Please use the new tool apsfilter-bug(1) to release bug- or problem reports. It automatically presents you a form in an editor window which asks you some standard questions. If you save and quit the editor session, then this report is sent automatically via e-mail to the proper apsfilter mailinglist. If apsfilter fails to print something or prints it in a way you wouldn't expect and you want to report an apsfilter error then please save the debugging output of one print session using the new aps2file(1) utility by typing aps2file -D -Z options file > /dev/null 2> file.debug and including the debugging output in the file file.debug into the edit session of the apsfilter-bug utility, so that it is included into the mail to the apsfilter mailinglist. Please note that you need to run /bin/sh (Bourne Shell), bash or a compatible shell, so that the above mentioned output redirection works. Under C-shell (/bin/csh) or tcsh it would't work. If you don't know, then simply make sure you use the Bournce shell by typing /bin/sh or bash, then you should have no problems with redirection of stdout and stderr (> /dev/null 2> file.debug). DOCUMENTATION
See official apsfilter homepage http://www.apsfilter.org/handbook.html Apsfilter Handbook including the Frequently Asked Questions (FAQ) USER FORUM
Please send questions to the official apsfilter help channel apsfilter-help@apsfilter.org. The above section BUGS and the file HOWTO-BUGREPORTS tells you how to report bugs. If you want to know how to troubleshoot your apsfilter installation, please read the manpage aps2file(1) and apsfilter-bug(1) as well as the Apsfilter Handbook carefully. HISTORY
The apspreview manpage has been written by Michael LoBin <phallobst@web.de> and first appeared in apsfilter V 7.1.0. BSD
Dec 27, 2001 BSD
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