#!/bin/bash username0= # username0 ´Â ¼±¾ð¸¸ µÇ°í ³Î·Î ¼¼Æ®µÆ½À´Ï´Ù. echo "username0 = ${username0-`whoami`}" # ¿¡ÄÚ µÇÁö ¾Ê½À´Ï´Ù. echo "username1 = ${username1-`whoami`}" # username1 ´Â ¼±¾ðµÇÁö ¾Ê¾Ò½À´Ï´Ù. # ¿¡ÄÚ µË´Ï´Ù. username2= # username2 ´Â ¼±¾ð¸¸ µÇ°í ³Î°í ¼¼Æ®µÆ½À´Ï´Ù. echo "username2 = ${username2:-`whoami`}" # Á¶°Ç Å×½ºÆ®½Ã - °¡ ¾Æ´Ï°í :- ¸¦ ½è±â ¶§¹®¿¡ ¿¡ÄÚ µË´Ï´Ù. exit 0