On Fri, Apr 15, 2022 at 10:34:25AM -0400, Chuck Zmudzinski wrote: > user@debian:~$ cat ipv6 > #!/bin/bash > if [ $1 == "on" ] > then > ip -6 route add default via <redacted> dev <redacted> > elif [ $1 == "off" ] > then > ip -6 route delete default > fi
Quotes are in the wrong place. The [ builtin command follows the ordinary parsing rules, which means an unquoted $1 argument will be subject to word splitting and filename expansions. In simpler terms, it will blow up if $1 is empty or contains whitespace characters or globbing characters. The quotes need to go around "$1", not around string constants. if [ "$1" == on ]
