unix - Shell Script to copy all files in a directory to a specified folder -

i'm new in shell script , trying figure out way write script copies files in current directory directory specified .txt file , if there matching names, adds current date in form of filename_yyyymmddmmss name of file being copied prevent overwritting.

can me out?

i saw thinking along lines of

#!/bin/bash  source=$pwd          #i dont know wheter makes sense want                      #say source directory 1 in right  destination=$1       #as said want read destination off of .txt file  in $source     #i pseudo coded part because didn't figure out.       if(file name exists)            copy changing name    else        copy    fi done    

the problem have no idea how check whether name exist , copy , rename @ same time.

thanks

how this? supposing target directory in file new_dir.txt.

    #!/bin/bash      new_dir=$(cat new_dir.txt)     now=$(date +"%y%m%d%m%s")      if [ ! -d $new_dir ];             echo "$new_dir doesn't exist" >&2             exit 1     fi      ls | while read ls_entry                 if [ ! -f $ls_entry ];                     continue             fi               if [ -f $new_dir/$ls_entry ];                     cp $ls_entry $new_dir/$ls_entry\_$now                else                     cp $ls_entry $new_dir/$ls_entry             fi       done