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lang-bash
echocommand,/bin/echo, which on Mac OS has no-eoption. when you're using bash on those systems, its built-inechocommand takes over. You can see this by explicitly typing/bin/echo whateverand observing the difference in behavior. To see the documentation for the built-in, typehelp echo./bin/echois often different from one OS to another and different from Bash's builtinecho.echo -eis not portable -- for example, some implementations of echo will print the "-e" as part of the output. If you want portability, use printf instead. For example, /bin/echo on OS X 10.7.4 does this. IIRC the bash builtin echo was also weird under 10.5.0, but I don't remember the details any more.echo -ehas bitten me before... Definitely useprintforcatwith a heredoc. The<<-variant of here docs are especially nice because you can strip leading indentation in the output, but indent for readability in the script