Shulou(Shulou.com)06/02 Report--

The format of 1.while is x=1while ((x $y)); the effect of then is the same. It is recommended to use the above. Parentheses will not report errors in character calculation. When writing a program, there may be BUG echo "true" else echo "false" fi# results return true-gt is greater than the right, return true >-lt is less than the same =-le is less than or equal to the same

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.