bc: Environment Variables
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1 10 Environment Variables
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1 The following environment variables are processed by 'bc':
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1 'POSIXLY_CORRECT'
1 This is the same as the -s option (⇒Command Line Options).
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1 'BC_ENV_ARGS'
1 This is another mechanism to get arguments to 'bc'. The format is
1 the same as the command line arguments. These arguments are
1 processed first, so any files listed in the environment arguments
1 are processed before any command line argument files. This allows
1 the user to set up "standard" options and files to be processed at
1 every invocation of 'bc'. The files in the environment variables
1 would typically contain function definitions for functions the user
1 wants defined every time 'bc' is run.
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1 'BC_LINE_LENGTH'
1 This should be an integer specifying the number of characters in an
1 output line for numbers. This includes the backslash and newline
1 characters for long numbers. As an extension, the value of zero
1 disables the multi-line feature. Any other value of this variable
1 that is less than 3 sets the line length to 70.
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