STRING(1)                   General Commands Manual                  STRING(1)



NNAAMMEE
       string - conditional testing whether a string is defined

DDEESSCCRRIIPPTTIIOONN
       mystr not yet defined
       now defined

       mymac not yet defined
       now defined

       myren not yet defined
       now defined

       standard macro is defined

       identifier and tab:      mystr is defined

       escape sequence after identifier: -mystr is defined



OpenBSD                        February 6, 2019                      STRING(1)