可以使用以下命令来判断文件是否为空：
使用test 命令：if [ -s filename ]; then echo "File is not empty"else echo "File is empty"fistat 命令：if [ $(stat -c %s filename) -eq 0 ]; then echo "File is empty"else echo "File is not empty"fiwc 命令：if [ $(wc -c < filename) -eq 0 ]; then echo "File is empty"else echo "File is not empty"fi
