Ambiguous redirect with $@

Asked Mar 15 '19 at 08:08

Active Mar 15 '19 at 08:10

Viewed 16 times

In .profile I have defined:

function fan.speed(){
    sudo su -c 'echo $@ > /sys/class/hwmon/hwmon1/pwm1'
}

It throws the error:

$ fan.speed 100
bash: "$@": ambiguous redirect

When I use "" instead of '', it works fine:

function fan.speed(){
    sudo su -c "echo $@ > /sys/class/hwmon/hwmon1/pwm1"
}

What's wrong with ''?

edited Mar 15 '19 at 08:10

jonrsharpe

asked Mar 15 '19 at 08:08

Alex Ander

With single quotes you're sending the literal value `$@`... – jonrsharpe Mar 15 '19 at 08:09
1

@jonrsharpe : While it is clear that we need double quotes here, I wonder why the error message is _ambiguous redirect_. – user1934428 Mar 15 '19 at 08:29

0 Answers0