Date: Wed, 24 Nov 2010 20:01:27 +0100 From: David DEMELIER <demelier.david@gmail.com> To: Dan Nelson <dnelson@allantgroup.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: trying to sysctl(3) a char value Message-ID: <AANLkTikr%2BdKe36utv=5afxByui8vThvXd%2Bpnw6Jpu_Ma@mail.gmail.com> In-Reply-To: <20101124185702.GE58734@dan.emsphone.com> References: <AANLkTikBXRoDHmGnQLoi4MEoBv09J8vbjG=6wriRxqg%2B@mail.gmail.com> <20101124185702.GE58734@dan.emsphone.com>
next in thread | previous in thread | raw e-mail | index | archive | help
2010/11/24 Dan Nelson <dnelson@allantgroup.com>: > In the last episode (Nov 24), David DEMELIER said: >> Since I cannot adjust the brightness on my HP Probook because it sucks >> I'm writing a small script that can be use instead. I need to sysctl >> the following sysctl variables : >> >> hw.acpi.video.lcd0.brightness >> hw.acpi.video.lcd0.levels >> >> the -brightness one is easy since it's an integer, but the levels is >> possibly a char : >> >> markand@Melon ~ $ sysctl hw.acpi.video.lcd0.brightness >> hw.acpi.video.lcd0.brightness: 90 >> markand@Melon ~ $ sysctl hw.acpi.video.lcd0.levels >> hw.acpi.video.lcd0.levels: 100 50 0 5 10 15 20 25 30 33 36 40 43 46 50 5= 5 60 65 70 75 80 83 86 90 93 96 100 > > Looking at the source, that sysctl definition is CTLTYPE_OPAQUE with a > display format of "I", which means that it's just an array of integers. > Print each one in a loop. =C2=A0You can also take a look at > /usr/src/sbin/sysctl/sysctl.c to see how it printed the numbers. > > -- > =C2=A0 =C2=A0 =C2=A0 =C2=A0Dan Nelson > =C2=A0 =C2=A0 =C2=A0 =C2=A0dnelson@allantgroup.com > Thank you, it works ! --=20 Demelier David
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?AANLkTikr%2BdKe36utv=5afxByui8vThvXd%2Bpnw6Jpu_Ma>