wc -L file 行数 ; 计算文件行数
logical l file 逻辑文件
external l file 外部文件
l local file name 本地文件名
l Text file output 文本文件输出
You can certainly do this visually by repeatedly running a command such as ls -l and comparing file sizes.
通过反复执行 ls -l 等命令并对比文件大小，肯定可以实现这个目标。
Again, this can be due to problems similar to just l: loading or if the boot.b file has been corrupted, moved, or deleted.
同样，这可能是因为出现了与只显示L类似的问题：正在加载，或者因boot . b文件被破坏、移动或删除而不能加载。
Observe the format % p: % l: the former denotes the path of the file, and the latter shows the line number.
注意格式% p： % l：前者表示文件的路径，后者表示行号。
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