braun brelin gvyhweqgmailcom got thanks responded braun 10507 pádraig brady wrote braun brelin wrote hello ive got small bash script looks like binsh a5 b2 op cexpr op b line gives error cexpr b line works echo c c anyone tell first line using op fails second line hardcoding value op works ah joys shell quoting command cexpr op b expr get two characters second parameter shell evaluated explicitly get shell evaluate command typed command line like echo eval expr op b could also take different approach op cexpr op b pádraig wed 06 aug 2008 041315 0100 ilug shell script question