>>>>> "Justin" == Justin Clift <justin@postgresql.org> writes:
Justin> if [ x"$foo" = x"" ]; then
Justin> or
Justin> if [ "$op" = "" ]; then
Justin> or
Justin> if [ "$foo" ]; then
I'm not the slightest bit a shell expert, but why not :-
if [ -z "$foo" ]; then
Is this POSIX/SUS2/whatever ?
Sincerely,
Adrian Phillips
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