Re: Fwd: Clearing RAM Caches
On Tue, 2022-08-16 at 07:24 -0400, Greg Wooledge wrote:
> The following two commands are equivalent:
>
> echo 1 > sudo /proc/sys/vm/drop_caches
>
> echo 1 /proc/sys/vm/drop_caches > sudo
>
> The file "sudo" will have "1 /proc/sys/vm/drop_caches" in it, because
> echo received two arguments. Redirections may appear anywhere in a
> "simple" command. It's conventional to write them at the end of the
> command, but the shell permits them to be anywhere.
>
> This is a standard feature of all POSIX shells, by the way. Not a
> bash extension.
I should have remembered this as I learnt it a couple of years ago when
implementing a POSIX shell (subset thereof).
--
Tixy
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