color option for /bin/ls breaks shell scripts

[Charles Jones]

Charles Jones wrote:
> So he learned some valuable lessons:
> 1. Always call binaries by their full path (use /bin/ls) so you don't 
> get bitten by an alias or something in $PATH overriding
> 2. bash -x -c 'command(s)' is helpful for debugging command-line shell
> 3. In some cases it's better to use something like: find . -name \*doc 
> -exec command \;
I also forgot:

4. You can safely alias ls to use color, if you use --color=auto.

 From the ls man page:
?With --color=auto, color codes are output only if standard output is 
connected to a terminal (tty).

-Charles
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