Contents
What happens if mode is 0 in stdbuf?
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.
Are there filters that don’t use stdbuf?
Also some filters (like ‘dd’ and ‘cat’ etc.) don’t use streams for I/O, and are thus unaffected by ‘stdbuf’ settings. On GLIBC platforms, specifying a buffer size, i.e., using fully buffered mode will result in undefined operation.
Can a fully buffered mode result in undefined operation?
On GLIBC platforms, specifying a buffer size, i.e. using fully buffered mode will result in undefined operation. Written by Padraig Brady.
Where can I find the documentation for stdbuf?
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 should give you access to the complete manual.
Are there any filters that are unaffected by stdbuf?
Also some filters (like ‘dd’ and ‘cat’ etc.) don’t use streams for I/O, and are thus unaffected by ‘stdbuf’ settings. On GLIBC platforms, specifying a buffer size, i.e. using fully buffered mode will result in undefined operation.
What are the binary prefixes for stdbuf ( 1 )?
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.
How to make output of any shell command unbuffered?
For example, hexdump file | ./my_script will only pass input from hexdump to my_script in buffered chunks, not line by line. Actually I want to know a general solution how to make any command unbuffered? AFAIK, you can’t do it without ugly hacks.