这个有程序代码的么

#!/bin/bash
# filename: foreach.sh
for dirs in ~/a_sub ~/b_sub
do
ls -alR $dirs | grep -E '(\.c|\.obj)$'
done

#!/bin/bash
# filename: grade_score.sh
echo "Input you sore: "
read score
if (($score < 0 || $score > 100));
then
echo "Out of range"
exit 1
fi
if (($score >= 0 && $score < 60));
then
echo "Bad"
elif (($score >= 60 && $score < 70));
then
echo "Just pass"
elif (($score >= 70 && $score < 80));
then
echo "Medium"
elif (($score >= 80 && $score < 90));
then
echo "Good"
elif(($score >= 90 && $score <= 100));
then
echo "Excellent"
else
echo "Error"
fi

#!/bin/sh
# filename: averagescore.sh SCORE1=0
SCORE2=0
SCORE3=0
NUMBER1=0
NUMBER2=0
NUMBER3=0 SAVEDIFS=$IFS
IFS=:
INPUT_FILE=score.txt
while read NAME CLASS SCORE
do
case $CLASS in
class1) NUMBER1=`expr $NUMBER1 + 1`
SCORE1=`expr $SCORE1 + $SCORE`;;
class2) NUMBER2=`expr $NUMBER2 + 1`
SCORE2=`expr $SCORE2 + $SCORE`;;
class3) NUMBER3=`expr $NUMBER3 + 1`
SCORE3=`expr $SCORE3 + $SCORE`;;
*) echo "'hasename $0':unknow class $CLASS";;
esac
done < $INPUT_FILE SCORE1=$(echo "scale=2; $SCORE1 / $NUMBER1" | bc)
SCORE2=$(echo "scale=2; $SCORE2 / $NUMBER2" | bc)
SCORE3=$(echo "scale=2; $SCORE3 / $NUMBER3" | bc) echo "|---------------------------------------|"
echo "| class student num average score|"
echo "|---------------------------------------|"
echo "| 1 $NUMBER1 $SCORE1 |"
echo "| 2 $NUMBER2 $SCORE2 |"
echo "| 3 $NUMBER3 $SCORE3 |"
echo "|---------------------------------------|" IFS=$SAVEDIFS


陈年！？

陈年！