Handling errors from shell.

[psmolak]

How we are supposed to handle errors when something wrong happens from the shell script level?

Let's say we want to move window like so:
echo 100 > $X11FS/$WID/geometry/y
however some internal x11 error occurs.

Checking #? does not make any sense since that's clearly not the cat's fault here.

[sdhand]

This isn't really something I've thought about. I guess it would be possible to add a file, say at /error, which contains some sort of log of X errors that have happened.