使用BASH对文本文件进行编码格式转换格

utf8bom.sh

has_bom()
{
    head -c3 "$1" | grep -qP '\xef\xbb\xbf';
}

utf8bom()
{
    echo "convert " $1
    has_bom $1
    if [ $? -ne 1 ]; then
        echo "ignore utf8 file " $1
        return 0
    fi
    echo -ne '\xEF\xBB\xBF' > $1.tmp
    iconv -f GB2312 -t UTF-8 $1 >> $1.tmp
    if [ $? -ne 0 ]; then
        echo "error" $1
        rm $1.tmp
        return 1
    fi
    rm $1
    mv $1.tmp $1
}


for d in $1/*; do
    utf8bom $d
done