On Monday 10 December 2007 18:34, Carlos E. R. wrote: > Hi, > > I have a bash script with this line: > > DIFF=$[ ($LOC_H - $HWC_H)*3600 + ($LOC_M - $HWC_M)*60 + ($LOC_S - > $HWC_S) ] > > to calculate a time difference in seconds. Well, when the seconds are > "08" it fails:
As Carl mentioned, BASH acts like the C and C++ compilers in that a leading 0 signifies octal (base 8) numeric literals and a 0x prefix signifies hexadecimal (base 16). You say you're doing temporal math. You might want to look at whether "date" makes this easier for you. It can do some temporal math. Also, when the math required in shell scripts gets more than a little complicated, I usually switch to "dc". It's very flexible, though it uses reverse polish notation, so you have to either like HP calculators (I do) or learn to readjust your thinking about how you express arithmetic expressions. ... Oh, all right. I should mention "bc," too. It does infix. If you're into that sort of thing. Both have good man pages. Randall Schulz -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
