Backlight setting via bash function

Using xbacklight backlight of laptop can be controlled.

So, there are multiple techniques to do it:

Simplest

[shell]

xbacklight -set

Smart

[.bashrc]

alias b='xbacklight -set'

[shell]

b

Over smart

[.bashrc]

# backlight function

backlight() {

   # take argument and put it as backlight settings

   param=$(echo "$1")

   echo "$param"

   if [ -z "$param" ]; then

       echo "Required parameter missing, enter value between 1 to 100"; return

   else

       if [ "$param" -ge "1" ]; then

            if [ "$param" -le "100" ]; then 

                 xbacklight -set $param

                 echo "xbacklight -set $param"

            else

                 echo "Parameter out of range, enter value between 1 to 100"; return

            fi

       else

            echo "Parameter out of range, enter value between 1 to 100"; return

       fi

   fi

}

alias b=backlight

[shell]

b