[LTP] Syntax error: Bad substitution in rwtest

[alsor_zhou <zh...@em...>]

hi, all
	Environment -----      ltp version: 20041007 	kernel: 2.4.20	arch: arm11
	When I run `export LTPROOT; ./rwtest -N rwtest01 -c -q -i 60s  -f sync
10%25000:rw-sync-$$' on my target board,
I met following error msgs,

init-2.05a# ./rwtest -N rwtest01 -c -q -i 60s  -f sync 10%25000:rw-sync-$$
start, now
./rwtest: 312: Syntax error: Bad substitution

and I located the error line 312 as following contents,
    306         dir=$(dirname $file)
    307         size=${f%%:*}           ## 10%25000, strip off the
longest pattern `:*' from the back end
    308         if [ $size = *%* ]      # if $size has the similar
format of `*%*'
    309         then
    310                 typeset -i n=0   #declare and initialize an
integer `n' with 0.
    311                 while [ $n -lt ${szcache[*]} ]
    312                 do
    313                         if [ szcache[$n] = $dir ]; then
    314                                 break;
    315                         fi
    316                         n=$n+1
    317                 done
    318                 if [ $n -lt ${#szcache[*]} ]
so will anybody  kindly show more details to me in following aspects?
1)	 What is the usage of ` $size = *%*' ?( Was my comment at the end of
308 appropriate?)
2)	and the `${szcache[*]}' ? I haven"t found this array being valued
before using.

Above script run well on x86 with bash-2.05b, so I roughly suppose it
caused by the bash version. Is it true?
Was there any advice ? thanks in advance.

Best regards,
alsor