A wireless router consumes single digit watts of power. A tablet or mobile phone consumes 1/10 or less of that. Making a slice of toast and a cup of tea uses more power than both of those devices all day combined. This is another silly attempt to shift blame from corporations and billionaires down to consumers and everyday people. Don’t buy it.







There’s probably a bunch of permissions errors, filesystems warnings for cross-filesystem mounts or links, etc. all going to stderr. Linux output streams are a bit odd, 1 is stdout and 2 is stderr. So the command is redirecting the “noise” to null and just printing the actual command output. That would be my assessment, but OP could probably give a more correct answer…!