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Full Discussion: How to check if the file DOES NOT have EOF
Top Forums Shell Programming and Scripting How to check if the file DOES NOT have EOF Post 302076263 by mgerdts on Saturday 10th of June 2006 10:06:10 PM
Old 06-10-2006
You can get the octal value of the last character of a file with...

Code:
#! /bin/sh

file=$1

size=`ls -l $file | awk '{print $5}'`
dd if=$file bs=1 skip=`expr $size - 1` count=1 2>/dev/null \
        | od -b | awk '{print $2; exit 0}'

This should work in Bourne Shell, Korn Shell, bash, or anything else that claims to be somewhat compatible with Bourne shell.
 

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LEARN ABOUT DEBIAN

aps2file

APS2FILE(1)						    BSD General Commands Manual 					       APS2FILE(1)

NAME

     aps2file -- printing to a file via apsfilter

SYNOPSIS

     aps2file [-D] [-Pqueue] [-Zoptions] [-ooutput] [input]
     aps2file [-h]

DESCRIPTION

     With aps2file you can direct the printer data generated by apsfilter(1) into an arbitrary file without the use of a spooler.

OPTIONS

     -h 	 show help screen
     -D 	 enable debug mode
     -Pqueue	 select a printer queue (different from the default one)
     -Zoptions	 use apsfilter command line options (comma-separated list)
     -ooutput	 direct data stream to output (default: stdout)
     input	 read data from input (default: stdin)

     Unlike printing with lpr(1), you can only use one input file at a time.

     Using aps2file is also the recommended way to create a debugging log of a failed printing attempt. If you include the -D flag, the apsfilter
     shell script will log every command and print it to stderr.  To save the output for inclusion into a bug report, you should therefore use a
     command of the sort
	   aps2file -D -o /dev/null [-P...] [-Z...] [input] 2> log.txt

NOTES

     aps2file only works correctly with entries in /etc/printcap that have been created by /usr/share/apsfilter/SETUP.

FILES

     /etc/printcap			 printer capability data base
     /usr/share/apsfilter/bin/apsfilter  apsfilter script

SEE ALSO

     apsfilter(1), apsfilter-bug(1), apspreview(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 aps2file manpage has been written by Michael LoBin <phallobst@web.de> and first appeared in apsfilter V 7.1.0.

BSD
								   Dec 19, 2001 							       BSD
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