bash - Bash 的内联注释？

Question

我希望能够在单行命令中注释掉单个标志。 Bash 似乎只有 from # till end-of-line 注释。我在看像这样的技巧:

ls -l $([ ] && -F is turned off) -a /etc

虽然丑陋，但聊胜于无。有没有更好的办法？

以下似乎可行，但我不确定它是否可移植:

ls -l `# -F is turned off` -a /etc

Answer 1

我的首选是:

Commenting in a Bash script

This will have some overhead, but technically it does answer your question

echo abc `#put your comment here` \
     def `#another chance for a comment` \
     xyz etc

And for pipelines specifically, there is a cleaner solution with no overhead

echo abc |        # normal comment OK here
     tr a-z A-Z | # another normal comment OK here
     sort |       # the pipelines are automatically continued
     uniq         # final comment

How to put a line comment for a multi-line command