How to invoke functions between two shell scripts?

Question

I have functions to logInfo()/logError() in a shell script (logger.sh). There are other shell scripts (example: createuser.sh) which require logging. How to invoke functions like logInfo() from createuser.sh

Without function invocations, these logInfo/logError functions are getting copied to every shell script that requires logging.

Answer 1

Put your logger functions in a separate file (that only contains functions, no commands), say myfuncs.sh. Then in any other script that needs these functions, somewhere near the top of that script add a line:

. myfuncs.sh

or, equivalently:

source myfuncs.sh

The functions in myfuncs.sh will then be available in that script.

Answer 2

If the only thing in the logger.sh script is the functions (ie: nothing runsfid you execute it from the command line, then you can source the shell script by including the line:

. logger.sh

See: https://ss64.com/bash/source.html