UNIX for Beginners Questions & Answers

ps aux  > /tmp/test
sed 1d  /tmp/test >  /tmp/test1

while IFS= read -r line;

do
USER=$(echo "$line"|awk  '{print $1}')

CPU_percentage=$(echo "$line"|awk  '{print $3}')


echo -e "{\"'PID'\":\"'"$PID"'\",\"'CPU_percentage'\":\"'"$CPU_percentage"'\"}"


done < /tmp/test1

read a
while read a b c d e f
do
    echo USER= $a CPU= $c
done

ps aux |script_above

ps aux | (
   # discard first (headings) line
   read a

   while read a b c rest
   do
       echo -e "{\"'PID'\":\"'"$a"'\",\"'CPU_percentage'\":\"'"$c"'\"}"
   done
)

ps --no-headers -eo "{\"'PID'\":\"'%p'\",\"'CPU_percentage'\":\"'%C'\"}"