UNIX for Dummies Questions & Answers

#!/bin/bash

while read line; do
   if [[ $line =~ Name ]]; then
      destFile="name.out"
      ((y++))
      [ $y -gt 1 ] && echo "$line" >/dev/null || echo "$line" >> $destFile
   elif [[ $line =~ Items ]]; then
      destFile="item.out"
      ((i++))
      [ $i -gt 1 ] && echo "$line" >/dev/null || echo "$line" >> $destFile
   else
      echo "$line" >> $destFile
   fi
done < jbchen.in

echo | cat name.out - item.out
"""Name"",""# Day"",""cost"""
"""jacket"",5,2300.0"
"""men,sweater"",3,800.0"

"""Items"",""day"",""cost"""
"""jacket"",1,300.0"
"""jacket"",2,500.0"
"""jacket"",3,500.0"
"""jacket"",4,500.0"
"""jacket"",5,500.0"
"""men,sweater"",1,300.0"
"""men,sweater"",2,500.0"
"""men,sweater"",3,500.0"

heads() {
   [ $1 -gt 1 ] && echo "$line" >/dev/null || sed 's/"//g' <<< $line >> $destFile
}
while read line
 do
   if [[ $line =~ Name ]]; then
      destFile="name.out"
      heads $((++i))
   elif [[ $line =~ Items ]]; then
      destFile="item.out"
      heads $((++y))
   else
      sed 's/^"//; s/"$//; s/""/"/g' <<< $line >>$destFile
   fi
done < jbchen.in

echo | cat name.out - item.out
Name,# Day,cost
"jacket",5,2300.0
"men,sweater",3,800.0

Items,day,cost
"jacket",1,300.0
"jacket",2,500.0
"jacket",3,500.0
"jacket",4,500.0
"jacket",5,500.0
"men,sweater",1,300.0
"men,sweater",2,500.0
"men,sweater",3,500.0

#!/bin/bash

heads() {
   [ $1 -gt 1 ] && echo "$line" > /dev/null || sed 's/"//g' <<< $line >> $destFile
   }
   while read line; do
      [[ $line =~ Name ]] && { destFile="name.out"; heads $((++i)); }
      [[ $line =~ Item ]] && { destFile="item.out"; heads $((++y)); }
      [[ ! $line =~ Name|Item ]] && sed 's/^"//; s/"$//; s/""/"/g' <<< $line >> $destFile
   done < jbchen.in