Small shell script to copy each file in a directory into a subdirectory named the same as the filename (but not extension!) and then move the file into it.

subdir_copy.sh

#!/bin/bash

dir=$(echo "$PWD")

for f in *
do
	if [ -f "$f" ];then
		# this is redundant due to how I'm searching, but why not?
		filename=$(basename "$f")
		extension="${filename##*.}"
		file_only="${filename%.*}"
		if [ "$file_only" == "$f" ];then
			mv "$f" "$f.tmp"
			fullfile=$(echo "$dir/$f.tmp")
		else
			fullfile=$(echo "$dir/$f")
		fi
		if [ -d "$file_only" ];then
			echo "Subdirectory $file_only exists"
		else
			newdir="$dir/$file_only"
			mkdir "$newdir"
			newfile="$newdir/$f"
			mv "$fullfile" "$newfile"
		fi
	fi
done