Ubuntu uses shell scripting to copy a class of files from all directories in the current directory to the same directory

There are some files and directories under the current directory, each of which has several. txt files in each directory.

It is now required to create a new directory in the current directory all, and all of those directories will have a. txt file

are copied to the directory all. The shell script in ubuntu12.04 is implemented as follows:

#!/bin/sh

# Hint Information
echo "Start:"

# define Variables
Dst=all
Pst=.txt

# Copy files to destination folder
If [-D ${DST}]
Then
echo "${DST} existed"
Else
echo "MkDir ${DST}"
mkdir./${DST}
CP./*/* $pst./$DST
Fi

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Ubuntu uses shell scripting to copy a class of files from all directories in the current directory to the same directory