Shell Programming and Scripting

# cat /file.txt
  System: cu=4 ent=0.1 mode=on  
cu     min       u      s          w         i   
0      500    0.1  0.3  0.5   0.1   
1      200    0.5  0.2  0.3  0.0

awk '/^[0-9]/ {print "R"NR"="$3+$4+$5+$6}' file.txt

eval `
awk ...
`
echo $R3
echo $R4

eval $(awk '/^[0-9]/ {print "R"$1"="$3+$4+$5+$6}' file.txt)

echo $R0
1
echo $R1
1

#!/bin/ksh
# Redirect input for following read commands
exec < file.txt
# Throw away header lines.
read x;read x
# Get 1st variable:
read x x u s w l
v1=$((u + s + w + l))
# Get 2nd variable:
read x x u s w l
v2=$((u + s + w + l))
printf "v1 = %.1f, v2 = %.1f\n" $v1 $v2

v1 = 1.0, v2 = 1.0

#!/bin/ksh

while read f1 f2 f3 f4 f5 f6
do
        [[ ! "$f1" == @([0-9]) ]] && continue

        (( ++c ))

        R[$c]=$(( f3 + f4 + f5 + f6 ))

done < file.txt

for i in ${!R[@]}
do
        printf "R[%d]: %.1f\n" $i ${R[$i]}
done

read R0 R1 << EOT
`awk '/^[0-9]/ {printf "%d ", $3+$4+$5+$6}' file.txt`
EOT
echo $R0
echo $R1