Using epoch time is very intriguing because it avoids a lot of the pain of converting back and forth between HH:MM:SS and seconds, but I'm having trouble setting the system time with date and using epoch time. Any reason to use date over systemsetup?
For one thing, you'll find GNU date in Linux as well as OSX. For another thing, I'm guessing that date is a less heavyweight utility than systemsetup.
To get epoch seconds from GNU date, you just do date +%s
To set the date with epoch seconds, I think you do date -s @192342... where 192342... is your epoch seconds of course and @ tells date that it's epoch seconds. Just one of the little things you have to dig real deep into date's info files to find.
---------- Post updated at 01:08 PM ---------- Previous update was at 01:05 PM ----------
Quote:
Originally Posted by xaiu
Earlier in the script I used IFS=":" to parse HH MM SS from systemsetup -gettime. I unset IFS after grabing my init values and everything seems to be working just fine.
You can set IFS for individual lines and nothing else by prefixing the line. Like: IFS=":" read HH MM SS < datafile Though IFS of course can have side-effects on how parameters expand so be careful what you put on the right-hand side.
You can also use IFS to seperate things into arrays for you.
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