unset

ftp://ftp.freebsd.org/pub/FreeBSD/ports/distfiles/bash/bash-4.0.tar.gz

./configure

make

make install

ln -s /usr/local/bin/bash /bin/bash

#!/bin/csh
set var=( a b c )
echo $#var #array 个数
echo $var #array
echo $var[2] #打印第二个元素
 

 pw usermod -n name -s csh