4 Dec
2020
4 Dec
'20
7:17 p.m.
< file grep foo works.
Niklas
Den fre 4 dec. 2020 kl 14:16 skrev Tyler Adams <coppero1237(a)gmail.com>:
I find cat file | grep foo simpler because it reads
Left to Right.
Tyler
On Fri, Dec 4, 2020 at 1:34 PM Andy Kosela <akosela(a)andykosela.com> wrote:
On 12/4/20, arnold(a)skeeve.com
<arnold(a)skeeve.com> wrote:
The classic example is:
$ cat file | grep foo
instead of the simpler:
$ grep foo file
It appears cat(1) and pipe(7) are deeply ingrained in people's brains.
--Andy
Dan Cross <crossd(a)gmail.com> wrote:
> This has always struck me as particularly elegant in scripts. Consider:
>
> cat "$@" | whatever
>
> (Or you may prefer `cat $* | whatever`)
>
> Now one's script can take any number of file arguments or stdin, even
if
the
filter does not.
I think Dan has hit the heart of the matter. People are used to using
cat for multiple files to start pumping data down a pipeline, so they
continue to do so even when there's only one file.