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Let's say; Script a.sh has function f1 defined. Script b.sh needs to call f1 to use. How do I do that? I searched online, it says I have to edit some PATH vairable, but does it mean global PATH or is there any PATH specifically used only in bash?

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up vote 7 down vote accepted

In b.sh:

source a.sh

That will make the function available to be called within b.sh.

The source command (also known as the . command) executes a.sh in b.sh's shell, so if you only want that function, you'll have to extract it into c.sh, and both a.sh and b.sh will have to source c.sh

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