How to read an output file in one command line?

Question

How to do something like this correctly?

$: lshw -html > /tmp/specs.html < firefox

also tried

$: firefox < "lshw -html > /tmp/specs.html"

Answer 1

You should output lshw to a file, and open that file with firefox, as follows:

lshw -html >/tmp/specs.html && firefox /tmp/specs.html

Or

sudo lshw -html >/tmp/specs.html && firefox /tmp/specs.html

Update: Following not uses temp files, but need bcat
Install bcat package:

sudo apt install ruby-bcat

Then the command you want is simple

lshw -html|bcat -b firefox

bcat help output:

Pipe to browser utility. Read standard input, possibly one or more s, and write concatenated / formatted output to browser.