indent: indent (changes the appearance of a C program) indent: indent: GNU indent changes the appearance of a C program by inserting or indent: deleting whitespace according to a plethora of options. Some canned indent: styles of formatting (like the GNU style, Kernighan & Ritchie style, indent: and original Berkeley style) are supported as well. indent: indent: GNU indent is a descendant of BSD indent. indent: indent: indent: