if [ *.rarをfindする処理 ]; then
    *.rarをzipに変換する処理
fi

if [ 空白文字をfindする処理 ]; then
　　sedで空白文字を削除処理
fi

#!/bin/bash

# 実行： ./rar2zip.sh [フォルダのパス]
#
# 以下のコマンドがいる
# realpath, unrar, zip, mktemp

function rar2zip {
    rar="$(realpath "$1")"
    zip="$(realpath "${2:-$(basename "$rar" .rar).zip}")"
    d=$(mktemp -d /tmp/rar2zip.XXXXXX)
    cd "$d"
    unrar x "$rar"
    zip -r "$zip" *
    mv -f $zip ${rar%/*}
    cd -
    rm -r "$d"
}

FILES=(`find ${1} -name *.rar -print`)

for rar in ${FILES[@]}
do
    rar2zip $rar
done

#!/bin/bash

BLANK_FILES=$(find ${1} -type f -print | grep '[[:blank:]]')

for blank in ${BLANK_FILES[@]}
do
    #echo $blank
    mv "$blank" "${blank//[[:blank:]]}"
done

find . -type f -name "*[[:blank:]]*" -exec bash -c 'mv "$1" "${1//[[:blank:]]}"' _ {} ;

#!/bin/sh
find "$@"
  -type f
  -name '*.rar'
  -exec sh -c
    'for rar in "$@"; do echo "$rar"; done'
    sh {} +
;

#!/bin/sh
find "$@"
  -type f
  -name '*　*'
  -print
|while IFS= read -r name; do
  echo "$name"
done