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stdbuf

Langue: en

Version: October 2010 (fedora - 01/12/10)

Section: 1 (Commandes utilisateur)

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 aq aq -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 © 2010 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 aqstdbuf invocationaq

should give you access to the complete manual.

<Ploop> Jayce : J'ai programmé un cd-key generator, C'est mal ?
<Jayce> ploop // ca ne marche pas sous MultideskOS ca
<Ploop> Jayce : et pourquoi ca ne fonctionne pas ?
<Jayce> ploop / parce que MultideskOS est recompilé pour chaque user
( produit )
<Jayce> s'il y a 100 commandes de MultideskOS, il est recompilé 100 fois
<Ploop> Et tu le genere comment le no. de serie ?
<Jayce> c automatique le recompilage, tu met compile = 100 et voila :-)
<Jayce> ploop // au hasard
<Frodon> Jayce: au hasard ? comment t'assure que tu fais pas 2 fois le
même ?
<Jayce> et les fichiers sont cryptés avec ce nr de série, donc si tu le
change, tous les fichiers sont détruits
<Jayce> frodon // il retient ce qu'il a déjà sorti
-- Jayce - 100% secure --