stdbuf - dard streams.
stdbuf OPTION... COMMAND
STDBUF(1) User Commands STDBUF(1)
NAME
stdbuf - Run COMMAND, with modified buffering operations for its stan-
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
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) 2012 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.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+---------------+--------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+--------------------+
|Availability | file/gnu-coreutils |
+---------------+--------------------+
|Stability | Uncommitted |
+---------------+--------------------+
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.
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original community
source was downloaded from http://ftp.gnu.org/gnu/coreutils/core-
utils-8.16.tar.xz
Further information about this software can be found on the open source
community website at http://www.gnu.org/software/coreutils/.
GNU coreutils 8.16 January 2016 STDBUF(1)