I have already installed autoconf-2.10 successfully. when I am trying to install autoconf-2.50 by using sh ./configure I got list of error message on my terminal as below :command not found ./configure: line 16: syntax error near unexpected token 'elif' ./configure:line16:'elif test -n "${BASH_VERSION->set}" && (set -o posix) >/dev/null 2>&1;then what is the wrong. Please help me. Yahoo! India Matrimony: Find your life partneronline. _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf