16_10.sh

该程序是一个计算成绩的源代码

#!/bin/sh
if test $# -eq 0
   then
      echo "Usage: $0 an directory"
      exit 1
   elif test $# -gt 1
   then
      echo "Usage: $0 an directory"
      exit 1
   else
   ls "$1" 2> /dev/null 1>&2
   if test $? -ne 0
      then
         echo "$1: not found in the present working directory."
      exit 1
   fi
   if test -d "$1"
      then
         directory="$1"

         set `ls $directory/*.o`        
         for file in $@
           do
             echo "$file"
             echo
             rm -i "$file"
           done
         
          set `ls $directory/*.ps`
          for file in $@
            do
              echo "$file"
              echo
              rm -i "$file"
            done

          set `ls $directory/*.jpg`
          for file in $@
            do
              echo "$file"
              echo
              rm -i "$file"
            done

           exit 0 
      else
         echo "$0: argument must be an directory."
      exit 1
   fi
fi