FILENAME=test.txt
MSG=$((ls $FILENAME) 2>&1);
ret=$?
re="name=(.*)"

if [ $ret -ne 0 ]; then
    # 文件没有找到
    echo $MSG >> err.log
    echo "Error message written in err.log"
else
    # 找到了文件
    echo "File found:Starting Process"
    for line in `cat $FILENAME`; do
      if [[ $line =~ $re ]]; then
        echo ${BASH_REMATCH[1]} >> stdout.log;
      fi
    done
fi