Shell Programming and Scripting

#!/bin/ksh

ls oldnames | while read old
do
   while read new
   do
     cp oldnames/"${old}" newnames/"${new}"
   done < names
done

#!/bin/sh

path="/path/oldnames"
newpath="/path/newname"
ls $path | awk -v path=$path -v newpath=$newpath ' pass the variables path and newpath to awk
BEGIN{ 
  # this "BEGIN" block will be executed first before any input record is processed
 q="\047"  # set variable q to contain the single quote
 while( (getline f < "names" ) > 0 ) { 
   # get the contents of "names" file, using f to store each line as the while loop iterates the file
   # then store the value of each line (f) to array "a". "c" is the index of the array
   a[++c]=f
 } 
 close("names") # close the file
}
{
  # process the results of "ls" command, putting each file listed into array "b", and increment the index
 b[++d]=$0  # 
}
END{
  # the below is done at the very end of processing the inputs.
  for ( i=1; i<=c;i++) {
    cmd="cp "q path"/"b[i] q" "q newpath"/"a[i]q
    print cmd
    #system(cmd) #uncomment to execute
  }
}
'

mkdir newnames
cnt=0
newname=($(< names))
for x in oldnames/*; do
cp $x newnames/${newname[$cnt]}
cnt=$(($cnt+1))
done