Within a shell, what is the difference between [ -n undefinedString ] and [ -n "$undefinedString" ] ? With bash I get:
$ unset undefinedString $ [ -n undefinedString ] && printf "$undefinedString" | od -c 0000000 $ [ -n "$undefinedString" ] && printf "$undefinedString" | od -c $ [ -z "$undefinedString" ] && printf "$undefinedString" | od -c 0000000 I mean, shouldn't [ -n undefinedString ], which I guess is without shell expansion, give an error? Clearly it is an empty string. I think I am confusing various terms. An explanation, perhaps by using the concept of C like strings, might be helpful. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/1316275876.75458.yahoomailclas...@web120706.mail.ne1.yahoo.com