Bahs - How To Copy Files From A Directory To Multiple Directories?

Question

The directory (mydir) has 1000 files (ls | wc -l) but I want to copy only those files with file.num.txt to a directory num.

Here is an example:

1. mydir
   • file.1
   • file.1.txt
   • file.2
   • file.2.txt
   • ...
2. /home/user1/store dir has dirs like
   • dir1
   • dir2
   • ...

So I want to copy file.1.txt to dir1, file.2.txt in dir2 and so forth.

Thanks.

Answer 1

This should work:

#!/bin/bash
src="mydir"
dest="/home/user1/store"
dir="dir" #name of the dir without number, i.e dir from dir1, dir2
regex='(.*\.)([0-9]+)(\.txt$)'
for file in "$src"/*;do
  if [[ -f $file ]];then
    if [[ $file =~ $regex ]];then
      mkdir -p "$dest"/"$dir${BASH_REMATCH[2]}"
      cp "$file" "$dest"/"$dir${BASH_REMATCH[2]}"
    fi
  fi
done

Explanation:

${BASH_REMATCH[2]} contains the captured group #2 (which is the number part of filename) from $file matched against pattern $regex. The pattern matching is done in the if statement:

if [[ $file =~ $regex ]];then

mkdir -p is used in case the directory structure doesn't exist, it will create it.