Shell Programming and Scripting

for file $(ls Folder1)
do
  ls Folder2/$file Folder3/$file* 1>/dev/null 2>&1
  [ $? -eq 0 ] || cp Folder1/$file Folder2/$file
done

cd to $path/folder1
ls -l name*.txt > files_list
for i in `cat files_list`
do
  file_name=$i
  new_file_name='$file_name'_abc{symbol}_vxz
  cp $file_name $path/Folder2/$new_file_name
done

ls Folder2/$file Folder3/$file*

cd Folder1
for f in * ; do
   [[ -f /path/to/Folder2/$f ]] && echo "$f found in Folder2" && continue
   ls /path/to/Folder3/${f}* &> /dev/null && echo "$f found in Folder3" && continue
   cp $f /path/to/Folder2
done

 
for file in Folder1/*;do 
f=$(basename $file); 
test -f Folder2/$f || cp $file Folder2/; 
test -f Folder3/${f}_SOMETHING || cp $file Folder3/${f}_SOMETHING ; 
done