bash script: delete .vscode/ipch folders

clear-vsc-ipch.sh

#!/bin/bash

help() {
	cat <<- EOF
		Usage: $(basename $0) PATH...
		Erase '.vscode/ipch' folders from VSCode projects in
		the sub-directories of the supplied path.

		PATH must be a valid folder.
	EOF
}

if [[ $# -ne 1 ]]; then
    echo "Error: $(basename $0) expects one argument."
    echo "Type '$(basename $0) --help' for more information."
    exit
fi


# Parse args
declare TargetFolder=""

while [[ $# -ne 0 ]]; do

    case $1 in
        '--help' | '-h' | '-?')
            help && exit
        ;;

        *)
            TargetFolder="$1"
        ;;
    esac

    shift

done


# File access error
if [[ ! -d $TargetFolder ]] && [[ ! -w $TargetFolder ]]; then
    echo "Provided base path is not a directory or is not writeable."
    echo "Error for path: $TargetFolder"
    exit
fi


# Main functionality: delete .vscode/ipch folders
echo "Removing '.vscode/ipch' folder in:"

let DeleteCount=0
let DeleteSize=0
declare Size=""

for Project in $(find "$TargetFolder" -name ipch); do

    Suffix="${Project:${#Project}-12:12}"

    if [[ $Suffix = '.vscode/ipch' ]]; then
        FullPath="$(realpath "$Project")"
        Size=$(du -sbh "${FullPath}" | cut -f1)
        echo "${FullPath:0:-12} (${Size})"
        DeleteSize=$((DeleteSize+$(du -sb "${FullPath}" | cut -f1)))
        rm -rf "$FullPath"
        ((++DeleteCount))
    fi

done


# Output result
if [[ $DeleteCount -eq 0 ]]; then
    echo "...no folders found."
    echo "Deleted ${DeleteCount} folders."
else
    declare Unit="Bytes"
    [[ ${DeleteSize} -gt 1024 ]] && ((DeleteSize/=1024)) && Unit="KB"
    [[ ${DeleteSize} -gt 1024 ]] && ((DeleteSize/=1024)) && Unit="MB"
    echo "Deleted ${DeleteCount} folders (${DeleteSize} ${Unit})"
fi