/dev/null 2>&1 Versus /dev/null 2>1 Post: 302502611

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Hi, suppose you have the following line at your crontab : 5 * * * * /usr/mine/script > /dev/null 2>&1 now i understood that the " > /dev/null 2>&1 outputs both Standard outpout and Standard Error messages to the /dev/null device or file... the first part , " > /dev/null " transfers...

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Hi , I am importing some table from /dev/null i dont understand what is /dev/null Sorry i am new to UNIX sam71

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LEARN ABOUT DEBIAN

kuesvr

KUESVR(7)						 Miscellaneous Information Manual						 KUESVR(7)

NAME

       kuesvr - the CERN KUIP edit server

SYNOPSIS

       kuesvr -p pid -c cmd -t tmpfile [ -e editor ] file

DESCRIPTION

       kuesvr  is  a  small  program  called from KUIP.  (KUIP stands for Kit for a User Interface Package; it is part of the Packlib library from
       CERN.)  kuesvr allows the user to call up an editor from within a KUIP program (PAW, for instance) on the file given by file, and  continue
       to use the program asynchronously.

       In  general  kuesvr  is	not  called directly from the command line (in Debian it is not even located in the $PATH); instead it will be run
       automatically from a KUIP program when an editor is needed, as long as the command line set with KUIP's HOST_EDITOR command  ends  with	an
       ampersand  ('&'), and $DISPLAY is set.  If $DISPLAY is unset (or, on non-Debian systems, if kuesvr cannot be found in $PATH), the ampersand
       will be ignored.  For instance,

       PAW > HOST_EDITOR 'emacs -geometry 80x48 &'

       The editor is expected to create its own graphical window.  However, since 'vi' is a frequent choice, setting HOST_EDITOR to  'vi  &'  will
       automatically be interpreted as 'x-terminal-emulator -e vi &' instead.

OPTIONS

       -c cmd Specifies the KUIP command invoking the edit server.

       -e editor
	      Specifies  the  editor  to  be  used.  By default it is vi.  Even though this flag is optional, it will be set anyway when kuesvr is
	      called from the KUIP library.

       -p pid Specifies the process ID of the calling program.

       -t tmpfile
	      Specifies the name of the temporary file used for communication between the calling program and the edit server.	This is  a  Debian
	      extension  added	for  security reasons.	It is a required argument, so this version of kuesvr will not work with a KUIP application
	      using CERN's unmodified Packlib; nor will CERN's unmodified kuesvr work with the Debian version of Packlib.

SEE ALSO

       o paw(1) - a program that can use the edit server
       o the KUIP online help available with command "help host_editor"
       o the KUIP manual, available at
	 http://wwwasdoc.web.cern.ch/wwwasdoc/psdir/kuip.ps.gz

AUTHOR

       This manual page was written by Kevin McCarty <kmccarty@debian.org> for the Debian GNU/Linux system (but may be used by others).

								   March 4, 2005							 KUESVR(7)

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> /dev/null

Discussion started by: rrs

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What is /dev/tty /dev/null and /dev/console

Discussion started by: civic2005