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 firstname.lastname@example.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)