On Jun 28, Carey Evans wrote > [EMAIL PROTECTED] (Erik B. Andersen) writes: > > [snip] > > > For most math, expr works just fine. Of course, expr is limited > > to integer math, but it works and is portable. > > Actually, for integer math, bash or ksh works quite well. > > bash$ a=41 > bash$ let a+=1 > bash$ echo $a > 42 > > -- > Carey Evans <*> [EMAIL PROTECTED] >
iThis is correct, but has the unfortunate side effect of not being portable, since not all /bin/sh happin to be bash. If you want to allow the program to run on non-Linux machines, or machines running ash, etc. then expr is the most portable way. If you don't care about using bash-isms, which is often the case for Debian, then what you describe above is much easier. -Erik -- Erik B. Andersen Web: http://www.inconnect.com/~andersen/ email: [EMAIL PROTECTED] --This message was written using 73% post-consumer electrons-- -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
