User Commands                                           STDBUF(1)



NAME
     stdbuf - Run COMMAND, with modified buffering operations for
     its standard streams.

SYNOPSIS
     stdbuf OPTION... COMMAND

DESCRIPTION
     Run COMMAND, with  modified  buffering  operations  for  its
     standard streams.

     Mandatory arguments to long options are mandatory for  short
     options too.

     -i, --input=MODE
          adjust standard input stream buffering

     -o, --output=MODE
          adjust standard output stream buffering

     -e, --error=MODE
          adjust standard error stream buffering

     --help
          display this help and exit

     --version
          output version information and exit

     If MODE is `L' the corresponding stream will  be  line  buf-
     fered.  This option is invalid with standard input.

     If MODE is `0' the corresponding stream will be unbuffered.

     Otherwise MODE is a number which may be followed by  one  of
     the  following:  KB 1000, K 1024, MB 1000*1000, M 1024*1024,
     and so on  for  G,  T,  P,  E,  Z,  Y.   In  this  case  the
     corresponding  stream will be fully buffered with the buffer
     size set to MODE bytes.

     NOTE: If COMMAND  adjusts  the  buffering  of  its  standard
     streams  (`tee'  does  for  e.g.)  then  that  will override
     corresponding  settings  changed  by  `stdbuf'.   Also  some
     filters  (like  `dd'  and  `cat' etc.) don't use streams for
     I/O, and are thus unaffected by `stdbuf' settings.

EXAMPLES
     tail -f access.log | stdbuf -oL
     This  will  immedidately   display   unique   entries   from
     access.log





GNU coreutils 8.5    Last change: April 2010                    1






User Commands                                           STDBUF(1)



BUGS
     On GLIBC platforms, specifying a  buffer  size,  i.e.  using
     fully buffered mode will result in undefined operation.

AUTHOR
     Written by Padraig Brady.

REPORTING BUGS
     Report stdbuf bugs to bug-coreutils@gnu.org
     GNU             coreutils             home             page:
     <http://www.gnu.org/software/coreutils/>
     General        help        using        GNU        software:
     <http://www.gnu.org/gethelp/>
     Report       stdbuf        translation        bugs        to
     <http://translationproject.org/team/>

COPYRIGHT
     Copyright c 2010 Free  Software  Foundation,  Inc.   License
     GPLv3+:      GNU      GPL     version     3     or     later
     <http://gnu.org/licenses/gpl.html>.
     This is free software: you are free to change and  redistri-
     bute  it.   There is NO WARRANTY, to the extent permitted by
     law.

SEE ALSO
     The full documentation for stdbuf is maintained as a Texinfo
     manual.   If  the  info  and  stdbuf  programs  are properly
     installed at your site, the command

          info coreutils stdbuf invocation

     should give you access to the complete manual.























GNU coreutils 8.5    Last change: April 2010                    2