$echo $? returns 0 after these test commands. $test -z "" $test -z But it returns different value after followings. $test -n "" -- echo$? returns 1 $test -n -- " " 0 Can someone explain why it goes as above? Especially I don't figure out why $test -n returns 0. """""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" +---------+ * Get your own Jmail account.|URL= http://www.jmail.co.jp |--jmail--| * Get your own home page.|URL= http://www.servance.jp +---------+ * Get your own domain.|URL= http://domaintorou.com/ """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
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