Minor changes

battery-monitor.sh

@@ -1,4 +1,4 @@
-#/bin/bash
+#!/bin/bash
 
 # battery-monitor.sh
 
@@ -24,9 +24,6 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-# To do. Add code to verify that the user is root or has run the script with
-# sudo. Add code to verify that the bc program is installed.
-
 # Change this variable to the group that should be informed of a need to
 # charge the battery. On GNU/Linux distributions users are often part of
 # a group that is the same as their login name, which works well if you only
@@ -38,13 +35,13 @@ group="scm"
 
 battery="BAT0"
 
-# If the battery is fully charged.
+# If the battery is fully charged, exit the program.
 
 if (( minutes == 0 )); then
     exit 0
 fi
 
-# Calculate the state of the battery.
+# Calculate the number of minutes that the battery has left.
 
 charge=$(cat /sys/class/power_supply/$battery/charge_now)
 discharge=$(cat /sys/class/power_supply/$battery/current_now)
@@ -58,14 +55,12 @@ minutes=$(echo "scale=2; $hours * 60" | bc -l)
 # battery-status.sh script to aid in my understanding of what was going on,
 # and I discovered a variance of minutes plus/minus each time that I ran it,
 # so the system is clearly making an estimate. Keep this in mind when setting
-# the minimum value.
-
-# Change this variable to you liking, but less than 40.00 is likely a bad
-# idea. YOU'VE BEEN WARNED!
+# the minimum value. Less than 40.00 is likely a bad idea. YOU'VE BEEN
+# WARNED!
 
 minimum=40.00
 
-If the minutes of charge are less than the minimum.
+# If the minutes of charge are less than the minimum, suspend the computer.
 
 if (( $(echo "$minutes < $minimum" | bc -l) )); then
     echo "Suspending the computer! Battery charge is needed!" | wall -g $group