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Full Discussion: Binary line being inserted while truncating a file
Top Forums UNIX for Dummies Questions & Answers Binary line being inserted while truncating a file Post 302353272 by akshay61286 on Tuesday 15th of September 2009 03:36:37 AM
Old 09-15-2009
Quote:
Originally Posted by pludi
You've got to give us some more information on how you truncate the file, what kind of link you use, and what and how another application might write into that file, because I can't yet reproduce that behaviour
Hi,

Following are the steps which we follow :-
1) a log file is generated through the redirection of Jboss' run.sh
Code:
nohup $JBOSS_HOME/bin/run.sh -c Instance_Name >  abc.log &

2)the above log file abc.log is then linked via :-
Code:
ln abc.log $JBOSS_HOME/server/deploy/jboss-web/ROOT/abc.txt

3) Every night a copy of the log file in ROOT is made and the original one is truncated :-
Code:
>abc.txt

After step 3, a new binary line is found as the first line of the truncated file

So a few points :-
1) the log file is being written by JBoss
2) linking is not via "-s"

Hope i cleared some doubts
 

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LEARN ABOUT HPUX

umodem

umodem(1)						      General Commands Manual							 umodem(1)

NAME

       umodem - XMODEM-protocol file transfer program

SYNOPSIS

       [options] files ...

DESCRIPTION

       is a file transfer program that incorporates the well-known XMODEM protocol used on CP/M systems and on the HP 110 portable computer.

   Options
       recognizes the following options and command-line arguments:

	      (one) Employ TERM II FTP 1.

	      Enable TERM FTP 3 (CP/M UG).

	      Enable 7-bit transfer mask.

	      Turn on ARPA Net flag.

	      Enter command mode.

	      Do not delete
			  before starting.

	      (ell) Turn on entry logging.

	      Allow overwriting of files.

	      Print all messages.

	      Receive file.
			  Specify for text, or for binary.

	      Send file.  Specify for text, or for binary.

	      Display file status only.

	      files	  Name of file or files to be transferred.

WARNINGS

       When  a binary file is transferred, the target file may have some extra bytes added at the end. This is due to the limitation of the under-
       lying protocol.

EXAMPLES

       Receive a text file:

       Receive a binary file:

       Send a text file:

       Send a binary file:

AUTHOR

       is in the public domain.

SEE ALSO

       cu(1), kermit(1), uucp(1).

																	 umodem(1)
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