Well techincally... the == and != operator matches the LHS against the pattern on the RHS. So [[ $a == "$b" ]] works. $ shellcheck oops.sh In oop

Well techincally... the == and != operator matches the LHS against the pattern on the RHS. So [[ $a == "$b" ]] works. $ shellcheck oops.sh In oops.sh line 4: [[ $a == $b ]] ^-- SC2053 (warning): Quote the right-hand side of == in [[ ]] to prevent glob matching. For more information: https://www.shellcheck.net/wiki/SC2053 -- Quote the right-hand side of == i... Unlike the bugs that the x$var works around this is all in the manual! https://www.gnu.org/software/bash/manual/bash.html#index-_005b_005b https://www.gnu.org/software/bash/manual/bash.html#index-_00...