Currently I'm doing some unit tests which are executed from bash. Unit tests are initialized, executed and cleaned up in a bash script. This script usualy contains an init(), execute() and cleanup() functions. But they are not mandatory. I'd like to test if they are or are not defined.
I did this previously by greping and seding the source, but it seemed wrong. Is there a more elegant way to do this?
Edit: The following sniplet works like a charm:
type $1 | grep -q 'shell function'
I think you're looking for the 'type' command. It'll tell you whether something is a function, built-in function, external command, or just not defined. Example:
$ type foo bash: type: foo: not found $ type ls ls is aliased to `ls --color=auto' $ which type $ type type type is a shell builtin $ type -t rvm function $ if [ -n "$(type -t rvm)" ] && [ "$(type -t rvm)" = function ]; then echo rvm is a function; else echo rvm is NOT a function; fi rvm is a function