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Diffstat (limited to 'info/adjbacklight.texinfo')
| -rw-r--r-- | info/adjbacklight.texinfo | 56 |
1 files changed, 43 insertions, 13 deletions
diff --git a/info/adjbacklight.texinfo b/info/adjbacklight.texinfo index 199c64b..000a742 100644 --- a/info/adjbacklight.texinfo +++ b/info/adjbacklight.texinfo @@ -38,7 +38,7 @@ Texts. A copy of the license is included in the section entitled @end ifnottex @titlepage -@title adjbacklight 5 +@title adjbacklight 7 @subtitle Convient method for adjusting the backlight on your portable computer. @author Mattias Andrée, maandree@@member.fsf.org @page @@ -87,6 +87,7 @@ code. Just run @code{sed -i s/200/400/g src/adjbacklight.c}, if you want 0.25 % precision. + @node Invoking @chapter Invoking @cindex invoking @@ -95,6 +96,8 @@ code. Just run @code{sed -i s/200/400/g src/adjbacklight.c}, if you want @cindex arguments @cindex device @cindex selecting device +@cindex interactive mode +@cindex non-interactive mode @cindex @command{adjbacklight} @cindex @option{-c} @cindex @option{--copying} @@ -103,20 +106,53 @@ code. Just run @code{sed -i s/200/400/g src/adjbacklight.c}, if you want @cindex @option{--warranty} @cindex @option{-a} @cindex @option{--all} +@cindex @option{-g} +@cindex @option{--get} +@cindex @option{-s} +@cindex @option{--set} @command{adjbacklight} can be started with @option{-c}, @option{--copying} or @option{--copyright} for displaying copyright information, @option{-w} or -@option{--warranty} for displaying a warranty disclaimer. If any other options -is used, help information is displayed. +@option{--warranty} for displaying a warranty disclaimer. To actually use the program, just execute @command{adjbacklight} without any arguments, or with @option{-a} or @option{--all} to not limit the devices to those that are not ACPI video devices. Alternatively you can list the devices either by full path or just the name in the directory @file{/sys/class/backlight}. +If you do not want to run in interactive mode, you can use the option +@option{-g} or @option{--get} to get the average backlight of all devices +selected by the arguments (as in interactive mode), the value will be +printed percents with no whitespace between the value and the percent, +the value will be formated in the traditional computer format, only 0-9 +with one dot (.) for separation of the integer part and the decimal part +(which will be two digits.) If you want to set the backlight there are +a few ways to do this: @option{-s} or @option{--set} followed by a value +or the value directly but with a prepending `=' if it does not start with +`+' or `-'. This argument is formated similar to the value printed by +@option{--get}, except it may end with zero, one, or two percent signed. +`+' is used for increase in brightness, `-' for decrease. Zero percent +signed is used for a raw value, one percent signed is used for a cooked +value that is usable on all backlight devices, and two percent signed +is used for a value relative to the current value. + +Assume the current backlight is 50 (25 %) on a device and the maximum is +200. @code{+25} will set it to 75 (37,5 %) and @code{-25} will set it to +25 (12,5 %). @code{+50%} will set it to 75 % (150), @code{-50%} would +set it to -25 % (-50) but because that is not within the accepted value +range it will be truncated to 0. @code{+100%%} will set it to 100 (50 %), +that it 200 % of the current brightness, @code{-50%%} will set it to +25 (12,5 %), that is 50 % of the current brightness. For the following +formats the `=' is optional if @option{-s} or @option{--set} is used. +@code{=150} will set the brightness to 150 (75 %), @code{=50%} will set +it to 50 % (100), and @code{=200%%} will set it to 100 (50 %), that is +200 % of the current brightness. + + @node Using @chapter Using +@cindex interactive mode @cindex usage @cindex keyboard @cindex darken screen @@ -125,21 +161,15 @@ either by full path or just the name in the directory @file{/sys/class/backlight @cindex exit @cindex close @cindex next screen -@cindex password -@cindex @command{sudo} -These key commands work when you start @command{adjbacklight} without -arguments and can see a bar. Due to restricted write permissions in -@file{/sys} you are required to enter your password and need to be a -sudoer; if you do not want this you could make your init sequence -give you write permissions to @file{/sys/class/backlight/*/brightness}, -and just remove the @command{sudo} in the bash script @file{adjbacklight}. +When you run @command{adjbacklight} in interactive mode, the following +keys are used to adjust the backlighting: The @kbd{left} and @kbd{down} arrow keys are used to darken the screen. The @kbd{right} and @kbd{up} arrow keys are used to brighten the screen. - @kbd{q}, @kbd{enter} and @kbd{<control>d} continues to the next backlight -controller, or if you are at the last one, quits the program. +controller, or if you are at the last one, exits the program. + @node Behind the scenes |