shell脚本判断文件为空

在shell脚本中，可以使用test指令来判断文件是否为空。一种常见的写法是使用-s选项。例如，在给定的脚本中，使用了`if [ -s file.txt ]; then`的语法来判断文件file.txt是否为空。如果文件不为空，则执行相应的操作；如果文件为空，则执行另一种操作。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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