copy file with different names in current directory shell script

Question

My bash script

echo -n "Round Name:"
read round
mkdir $round

echo -n "File Names:"
read $1 $2 $3 $4 $5 $6
cp ~/Documents/Library/Template.py $1.py $2.py $3.py $4.py $5.py $6.py .

I have automation for directories and want the same automation for filenames.

After taking unknown inputs, How can I make my shell scripts do this?
cp ~/Documents/Library/Template.py A.py B.py C.py D1.py D2.py $round/.

Answer 1

Rather than reading the various strings interactively, just have the user pass them on the script's command line.

The following script would be called like

./script -d dirname -t templatefile -- string1 string2 string3 string4

... and it would create dirname if it doesn't already exist, and then copy templatefile into that directory with the root names given by the strings. If the template file has a filename suffix, this would be added to the end of each string to create the new filenames (after removing the suffix from the string as to not duplicate an already existing suffix).

You may bypass the step in the script that creates the directory by using the -n option, which makes the script assume that the directory specified by -d already exists.

#!/bin/sh

# Unset strings set via options.
unset -v dirpath do_mkdir templatepath

# Do command line parsing for -d and -t options.
while getopts d:nt: opt; do
    case $opt in
        d)
            dirpath=$OPTARG
            ;;
        n)
            do_mkdir=false
            ;;
        t)
            templatepath=$OPTARG
            ;;
        *)
            echo 'Error in command line parsing' >&2
            exit 1
    esac
done

shift "$((OPTIND - 1))"

# Sanity checks.
: "${dirpath:?Missing directory path (-d)}"
: "${templatepath:?Missing template file path (-t)}"

if [ ! -f "$templatepath" ]; then
    printf 'Can not find template file "%s"\n' "$templatepath" >&2
    exit 1
fi

if "${do_mkdir-true}"; then
    # Create destination directory.
    mkdir -p -- "$dirpath" || exit
fi
if [ ! -d "$dirpath" ]; then
    printf 'Directory "%s" does not exist\n' "$dirpath" >&2
    exit 1
fi

# Check to see whether the template file has a filename suffix.
# If so, save the suffix in $suffix.
suffix=${templatepath##*.}
if [ "$suffix" = "$templatepath" ]; then
    # No filename suffix.
    suffix=''
else
    # Has filename suffix.
    suffix=.$suffix
fi

# Do copying.
for string do
    # Remove the suffix from the string,
    # if the string ends with the suffix.
    string=${string%$suffix}
    cp -- "$templatepath" "$dirpath/$string$suffix"
done

To recreate your example at the end of your question, you would use this script like so:

./script -t ~/Documents/Library/Template.py -d "$round" -- A B C D1 D2

Answer 2

#!/bin/bash

echo -n "Round Name:"
read round
mkdir $round

read -r -p "Enter the filenames:" -a arr
for filenames in "${arr[@]}"; do 
cp ~/Documents/Library/Template.py $round/$filenames
done

This is done with an array, so it accepts infinite inputs. Just input the filenames separated by space, like so:

Enter the filenames:test1 test2 test3