stdbuf

       dard 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  buffered.   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 follow-
       ing: 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 cut -d ' ' -f1 | uniq
       This will immedidately display unique entries from access.log

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
       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 8.12.197-032bb    September 2011                       STDBUF(1)
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