TIP: How to Use Standard In (stdin) in Shell Scripts

[JimmyHartington]

So to understand.
The input from KM becomes stdin for the shell script. And with no file cat uses this instead.

In cases with shell scripts then I am a bit unsure where stdin "ends up" in the shell script.

This post from @peternlewis also sends input from KM.

Run Single Command on Finder Selection

Here is a macro that will let you process the Finder Selection and then run a single shell command applying to all the selected files. It gathers the Finder Selection together into a newline-delimited variable (Paths), and then feeds that variable to the shell script as STDIN. Then it uses a trick from Mac OS X Hints to convert the line endings into null (\0) characters, and then pass them to xargs to build the command line. The command currently is just ls -l, but it could be anything, and s…

But this is another shell script, so what happens with stdin in this case?