RT
例如：
#!/bin/bash
if [ $1 -gt 90 ]
then
echo "Good, $1"
elif [ $1 -gt 70 ]
then
echo "OK, $1"
else
echo "Bad, $1"
fi出现错误：line 5:syntax error near unexpected token 'elif'再例如：
#!/bin/bash
x=1999
let "x = $x + 1"
echo $x
x="olympic'"$x
echo $x
输出：
") intax error : invalid arithmetic operatior < error token is "
1999
olympic'1999
例如：
#!/bin/bash
if [ $1 -gt 90 ]
then
echo "Good, $1"
elif [ $1 -gt 70 ]
then
echo "OK, $1"
else
echo "Bad, $1"
fi出现错误：line 5:syntax error near unexpected token 'elif'再例如：
#!/bin/bash
x=1999
let "x = $x + 1"
echo $x
x="olympic'"$x
echo $x
输出：
") intax error : invalid arithmetic operatior < error token is "
1999
olympic'1999
程序都没问题：$ ./test.sh 100
Good, 100
$ ./test.sh 5
Bad,5
$ ./test.sh 80
Ok, 80$./test2.sh
2000
olympic'2000$ bash --version
GNU bash, version 3.2.49(22)-release (i686-pc-cygwin)
Copyright (C) 2007 Free Software Foundation, Inc.$ cat /proc/version
CYGWIN_NT-6.1-WOW64 1.5.25(0.156/4/2) 2008-11-18 15:24
CygWin默认的包shell命令不全的