DESCRIPTION

This program is to be used in shell/perl/python scripts, so the author does not need to use the echo program. The advantage of g.message is that it formats messages just like other GRASS modules do and that its functionality is influenced by the GRASS_VERBOSE and GRASS_MESSAGE_FORMAT environment variables.

The program can be used for standard informative messages as well as warnings (-w flag) and fatal errors (-e flag). For debugging purposes, the -d flag will cause g.message to print a debugging message at the given level.

NOTES

Messges containing '!' and '$' must use single 'quotes' to avoid unwanted shell translation.

If you want a long message (mutli-line) to be dealt with as a single paragraph, use a single call to g.message with text split in the script using the backslash as the last character. (In shell scripts don't close the "quote")

A blank line may be obtained with: g.message ""

Redundant whitespace will be stripped away.

VERBOSITY LEVELS

• 0 - only errors and warnings are printed
• 1 - progress messages are printed
• 2 - all module messages are printed
• 3 - additional verbose messages are printed

DEBUG LEVELS

• 1 - message is printed once or few times per module
• 3 - each row (raster) or line (vector)
• 5 - each cell (raster) or point (vector)

SEE ALSO

AUTHOR

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