запустите COMMAND с измененными операциями буферизации для стандартных потоков (Run COMMAND, with modified buffering operations for its standard streams.)
Имя (Name)
stdbuf - Run COMMAND, with modified buffering operations for its
standard streams.
Синопсис (Synopsis)
stdbuf OPTION... COMMAND
Описание (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. Binary prefixes can be used, too: KiB=K,
MiB=M, and so on. 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.
Примеры (Examples)
tail -f access.log | stdbuf -oL cut -d ' ' -f1 | uniq
This will immediately display unique entries from access.log
Ошибки (баги) (Bugs)
On GLIBC platforms, specifying a buffer size, i.e., using fully
buffered mode will result in undefined operation.
