A simple script to copy files defined by a list in parallel

soNeedy.sh

#!/bin/bash

set -e
set -u
set -o pipefail

#   A simple script to find files listed in a text file and copy them elsewhere
#       Written for Chaochih Liu
#       Written by Paul Hoffman

function Usage() {
    echo -e "\
Usage: ./so_needy.sh <file_info> <file_dir> <cp_dir> \n\
where:  <file_info>     is a list of file names \n\
        either including or excluding extensions \n\
\n\
        <file_dir>      is the directory where files are stored \n\
\n\
        <cp_dir>        is the directory to copy the files to \n\
\n\
ex.     ./so_needy.sh files.txt ~/directory1 ~/directory2 \n\
---------------------------------------------------------------\n\
\n\
Please note: this requires GNU Parallel to run \n\
""" >&2
    exit 1
}

if [ "$#" -lt 3 ]
then
    Usage
fi

#   Check to see if GNU Parallel is installed
if `command -v parallel > /dev/null 2> /dev/null`
then
    echo "Parallel is installed"
else
    echo "Parallel is not installed"
    exit 1
fi

#   Specify the list of files
FILE_INFO="$1"

#   Specify the directory where files are stored
FILE_DIR="$2"

#   Specify the directory to where they need to be copied
CP_DIR="$3"

#   Find the files and copy them in parallel
cat ${SAMPLE_INFO} | parallel "find ${FILE_DIR} -name *{}* | xargs -I % cp -a % ${CP_DIR}"