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stdbuf(1) [debian man page]

STDBUF(1)							   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 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 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
       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) 2011 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

       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 8.12.197-032bb					  September 2011							 STDBUF(1)

Check Out this Related Man Page

HEAD(1) 							   User Commands							   HEAD(1)

NAME

       head - output the first part of files

SYNOPSIS

       head [OPTION]... [FILE]...

DESCRIPTION

       Print  the first 10 lines of each FILE to standard output.  With more than one FILE, precede each with a header giving the file name.  With
       no FILE, or when FILE is -, read standard input.

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

       -c, --bytes=[-]K
	      print the first K bytes of each file; with the leading `-', print all but the last K bytes of each file

       -n, --lines=[-]K
	      print the first K lines instead of the first 10; with the leading `-', print all but the last K lines of each file

       -q, --quiet, --silent
	      never print headers giving file names

       -v, --verbose
	      always print headers giving file names

       --help display this help and exit

       --version
	      output version information and exit

       K may have a multiplier suffix: b 512, kB 1000, K 1024, MB 1000*1000, M 1024*1024, GB 1000*1000*1000, G 1024*1024*1024, and so on for T, P,
       E, Z, Y.

AUTHOR

       Written by David MacKenzie and Jim Meyering.

REPORTING BUGS

       Report head 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 head translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2011 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

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

	      info coreutils 'head invocation'

       should give you access to the complete manual.

GNU coreutils 8.12.197-032bb					  September 2011							   HEAD(1)
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