caller in Mac OS X
By: Strauss K in macos Tutorials on 2011-02-03
In Mac OS X, caller is not a standalone command like it is in some other operating systems. Instead, caller is a built-in shell command that is used within a Bash script to display the line number and source file of a function call in the call stack.
Here's an example of how to use caller within a Bash script:
#!/bin/bash
function foo() {
bar
}
function bar() {
caller 0
}
foo
When this script is executed, the output will be:
3 /path/to/script.sh
This indicates that the bar function was called from line 3 of the script script.sh.
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