[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: bash sockets: printf \x0a does TCP fragmentation

From: dirk+bash
Subject: Re: bash sockets: printf \x0a does TCP fragmentation
Date: Tue, 25 Sep 2018 15:04:37 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0

On 9/23/18 8:26 PM, Chet Ramey wrote:
> On 9/22/18 4:22 PM, Bob Proulx wrote:
>> Note that I *did* provide you with a way to do what you wanted to do. :-)
>> It was also noted in another message that the external standalone
>> printf command line utility did buffer as you desired.  That seems
>> another very good solution too.  Simply use "command printf ..." to
>> force using the external version.
> This won't work the way you want. The `command' builtin only inhibits
> execution of shell functions. It still executes builtins.  You want to
> either get the full pathname of a printf utility using `type -ap printf'
> and use that, or use the env or exec variants I recommended in my last
> message.

FYI: I ended up checking with type before whether an external printf
exists and set a variable for this and then just call this variable.

env or exec: never thought about it (thanks!) but as both are external
commands, that would mean upon every call one additional external program.
(yes, I know that there is such thing as a fs buffer). Subshells also costs
resources. As this is a core function I am happy for every homeopathic dose
of time I safe here :-)

Cheers, Dirk

reply via email to

[Prev in Thread] Current Thread [Next in Thread]