Linux shell error Syntax Error:bad for loop variable

Wrote a simple shell under Linux, looping 10 times.

test.sh

#!/bin/Bash # #                                  #                         #循环10次                                 # #for ((i=0; i<; i++))                                               ;   Do                                                                         echo Good morning, this is $i theshell program  .                                                                                                           Done

Execution: SH test.sh report the following error.

Syntax Error:bad for loop variable

Searched the internet for a bit.

Because Ubuntu has replaced the traditional bash with dash in order to speed up the boot-up, it's no problem for us to do so.

Bash test.sh

So what if we just want to do it in a way like sh test.sh?

Modify the code.

 for inch Ten `                    Do                                                                         echo Good morning, this is $i theshell program  .                                   Done

This time, you do sh test.sh, you will not report a mistake.

Linux shell error Syntax Error:bad for loop variable