1STRING(1) General Commands Manual STRING(1) 2 3 4 5NNAAMMEE 6 string - conditional testing whether a string is defined 7 8DDEESSCCRRIIPPTTIIOONN 9 mystr not yet defined 10 now defined 11 12 mymac not yet defined 13 now defined 14 15 myren not yet defined 16 now defined 17 18 standard macro is defined 19 20 identifier and tab: mystr is defined 21 22 escape sequence after identifier: -mystr is defined 23 24 25 26OpenBSD February 6, 2019 STRING(1) 27