Question

I would like to reference a variable that I have in a bash script “value” as well as “max.” As of now, I have a text interface in which after given commands, the terminal window displays something similar to

==========================================================================> 100%

for a progress bar. The variable is referenced throughout the script, and I would like to call that variable in my cocoa app.

Thanks in advance!

Answer 1

Your question isn’t entirely clear, but it sounds like you want to use environment variables. In bash, you need to use the export builtin to mark a variable to be exported to child processes. Then, in your Cocoa app, you can use getenv(3) function to retrieve the environment variable value. For example:

# In your bash script
value=foo
max=bar
export value max

// Now in your Cocoa application:
char *value;
if((value = getenv("value")))
{
    // Use value
}
// else value is not in the environment