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 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 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  example)
       then  that  will override corresponding changes 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 immediately 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

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report stdbuf translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright  ©  2017  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 redistribute it.  There is NO  WARRANTY,
       to the extent permitted by law.

SEE ALSO

       Full documentation at: <http://www.gnu.org/software/coreutils/stdbuf>
       or available locally via: info '(coreutils) stdbuf invocation'