Re: Setting system time on startup
On Fri, Jun 07, 2002 at 11:51:16AM +0800, Patrick Hsieh wrote: | Hello Pietro Cagnoni [EMAIL PROTECTED], | | What is the advantage to keep the clock on GMT? Suppose the machine moves and is now in a new timezone. Also suppose you're running a legacy OS (eg MS-DOS or MS-Windows) and you now want the clock to show the correct local time. Here's the steps to correct it : 1) enter the BIOS config and reset the clock to the new local time 2) boot the OS and reset the timezone to the new local timezone Now consider the same scenario, except that a modern (eg Debian) OS is on the machine. Here are the steps to show the correct local time : 1) tell the system what the new local time zone is (run 'tzconfig') Storing a well-defined and constant value (UTC, aka GMT) is more flexible than storing an ever changing value. (give me a little leeway here, time is always changing, but GMT is constant whereas EST, EDT, CST, CDT (yes I moved a while ago then DST kicked in, so this desktop machine has been through 4 timezones) is ever changing) -D -- Whoever loves discipline loves knowledge, but he who hates correction is stupid. Proverbs 12:1 GnuPG key : http://dman.ddts.net/~dman/public_key.gpg pgpGFtcofS7Wo.pgp Description: PGP signature
Re: Setting system time on startup
Patrick Hsieh wrote: Hello Pietro Cagnoni [EMAIL PROTECTED], What is the advantage to keep the clock on GMT? it keeps your system simpler and cleaner. believe me, it's worth it! for instance, linux needs the bios clock on gmt, so adjusts it at boot and at shutdown. if you don't shutdown properly (a power outage, or a kick to the plug) the bios clocks remains to gmt, but the reboot adjust gets done anyway, and you double your gmt displacement. so your start getting incoherent file modification times. if you're a frequent user of make, you can understand the subsequent mess... pietro. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time on startup
Pietro Cagnoni writes: for instance, linux needs the bios clock on gmt... No it doesn't. ...so adjusts it at boot and at shutdown. Not on my computers. -- John Hasler [EMAIL PROTECTED] (John Hasler) Dancing Horse Hill Elmwood, WI -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time on startup
On 2002.06.07 01:16 Derrick 'dman' Hudson wrote: On Fri, Jun 07, 2002 at 11:51:16AM +0800, Patrick Hsieh wrote: | Hello Pietro Cagnoni [EMAIL PROTECTED], | | What is the advantage to keep the clock on GMT? Suppose the machine moves and is now in a new timezone. Also suppose you're running a legacy OS (eg MS-DOS or MS-Windows) and you now want the clock to show the correct local time. Here's the steps to correct it : 1) enter the BIOS config and reset the clock to the new local time 2) boot the OS and reset the timezone to the new local timezone Now consider the same scenario, except that a modern (eg Debian) OS is on the machine. Here are the steps to show the correct local time : 1) tell the system what the new local time zone is (run 'tzconfig') Storing a well-defined and constant value (UTC, aka GMT) is more flexible than storing an ever changing value. (give me a little leeway here, time is always changing, but GMT is constant whereas EST, EDT, CST, CDT (yes I moved a while ago then DST kicked in, so this desktop machine has been through 4 timezones) is ever changing) Goog point, Derek. I'll look into fixing the BIOS setting next time I reboot (which hopefully won't be awhile, but with these damned midwest t-storms, you never can tell). Ian -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time on startup
On Fri, Jun 07, 2002 at 11:15:00AM -0400, Ian D. Stewart wrote: | On 2002.06.07 01:16 Derrick 'dman' Hudson wrote: | On Fri, Jun 07, 2002 at 11:51:16AM +0800, Patrick Hsieh wrote: | | Hello Pietro Cagnoni [EMAIL PROTECTED], | | | | What is the advantage to keep the clock on GMT? | | Suppose the machine moves and is now in a new timezone. Also suppose | you're running a legacy OS (eg MS-DOS or MS-Windows) and you now want | the clock to show the correct local time. ... | Goog point, Derek. I'll look into fixing the BIOS setting next time I | reboot (which hopefully won't be awhile, but with these damned midwest | t-storms, you never can tell). Do note that if the BIOS must be shared with one of the above-mentioned legacy OSes, you will either need to set it to local time or live with a borked clock in that OS. (on the company laptop I chose the latter -- windows shows UTC not localtime in the system tray, and I laugh at its idiocy :-)) HAND, -D -- The lot is cast into the lap, but its every decision is from the Lord. Proverbs 16:33 GnuPG key : http://dman.ddts.net/~dman/public_key.gpg pgp1zU8PRsJR9.pgp Description: PGP signature
Re: Setting system time on startup
Hello Pietro Cagnoni [EMAIL PROTECTED], What is the advantage to keep the clock on GMT? On Wed, 05 Jun 2002 19:21:28 +0200 Pietro Cagnoni [EMAIL PROTECTED] wrote: Ian D. Stewart wrote: Howdy Folks, Right now, when booting my linux box, the system clock is off by four hours (I'm guessing it is set to GMT). I can reset the clock using date, but this is starting to get a bit tedious. Is there a way to automate this process and/or convince Linux to set the system clock to local time? debian readjusts the clock on shutdown, maybe there's something broken somewhere; check the console output on shutdown. if you use just linux on the box, it's better to keep the clock on GMT: adjust UTC=* in /etc/default/rcS . pietro. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED] -- Patrick Hsieh [EMAIL PROTECTED] GPG public key http://pahud.net/pubkeys/pahudatpahud.gpg -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Setting system time on startup
Howdy Folks, Right now, when booting my linux box, the system clock is off by four hours (I'm guessing it is set to GMT). I can reset the clock using date, but this is starting to get a bit tedious. Is there a way to automate this process and/or convince Linux to set the system clock to local time? Thanx, Ian -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time on startup
On Wed, 5 Jun 2002 05:27:54 -0400 Ian D. Stewart [EMAIL PROTECTED] wrote: Right now, when booting my linux box, the system clock is off by four hours (I'm guessing it is set to GMT). I can reset the clock using date, but this is starting to get a bit tedious. Is there a way to automate this process and/or convince Linux to set the system clock to local time? man hwclock -- Jamin W. Collins -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time on startup
On Wed, Jun 05, 2002 at 05:27:54AM -0400, Ian D. Stewart wrote: Right now, when booting my linux box, the system clock is off by four hours (I'm guessing it is set to GMT). I can reset the clock using date, but this is starting to get a bit tedious. Is there a way to automate this process and/or convince Linux to set the system clock to local time? Install the ntpdate package to set your date on boot and ntp to keep it accurate thereafter. As for the time zone, run tzconfig to set that. -- When we reduce our own liberties to stop terrorism, the terrorists have already won. - reverius Innocence is no protection when governments go bad. - Tom Swiss -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time on startup
On Wed, 2002-06-05 at 04:27, Ian D. Stewart wrote: Howdy Folks, Right now, when booting my linux box, the system clock is off by four hours (I'm guessing it is set to GMT). I can reset the clock using date, but this is starting to get a bit tedious. Is there a way to automate this process and/or convince Linux to set the system clock to local time? try hwclock --systohc -Mark -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time on startup
On Wed, 5 Jun 2002, Ian D. Stewart wrote: Right now, when booting my linux box, the system clock is off by four hours (I'm guessing it is set to GMT). I can reset the clock using date, but this is starting to get a bit tedious. Is there a way to automate this process and/or convince Linux to set the system clock to local time? Check out /etc/init.d/hwclockfirst.sh, /etc/init.d/hwclock.sh, and /etc/default/rcS, which seem to be the files responsible for starting the system clock. Also try 'man hwclock', which, way down, has useful information about the relationship between the hardware clock and the system clock. hth pw -- Patrick Wiseman [EMAIL PROTECTED] Linux user #17943 -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time on startup
Ian D. Stewart [EMAIL PROTECTED] writes: Right now, when booting my linux box, the system clock is off by four hours (I'm guessing it is set to GMT). I can reset the clock using date, but this is starting to get a bit tedious. Is there a way to automate this process and/or convince Linux to set the system clock to local time? You can change that by setting UTC=yes|no in /etc/default/rcS. This setting should be yes if your HW clock is set to UTC (aka GMT) or no if your HW clock is set to local time. So first check to see what your HW clock is set to by using the command hwclock --show. You can then use hwclock to either set your system time from your HW clock, or vice versa. This is done automatically at boot by the hwclock* scripts in /etc/init.d The main thing is setting UTC to the appropriate yes or no in /etc/default/rcS, assuming, of course, that the problem is the fact that your HW clock setting doesn't match the UTC setting. Gary -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time on startup
On Wed, Jun 05, 2002 at 05:27:54AM -0400, Ian D. Stewart wrote: Howdy Folks, Right now, when booting my linux box, the system clock is off by four hours (I'm guessing it is set to GMT). I can reset the clock using date, but this is starting to get a bit tedious. Is there a way to automate this process and/or convince Linux to set the system clock to local time? I am having trouble successfully posting to this list, so I apologize for dupicates. Try hwclock --systohc -Mark -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time on startup
Ian D. Stewart wrote: Howdy Folks, Right now, when booting my linux box, the system clock is off by four hours (I'm guessing it is set to GMT). I can reset the clock using date, but this is starting to get a bit tedious. Is there a way to automate this process and/or convince Linux to set the system clock to local time? debian readjusts the clock on shutdown, maybe there's something broken somewhere; check the console output on shutdown. if you use just linux on the box, it's better to keep the clock on GMT: adjust UTC=* in /etc/default/rcS . pietro. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time on startup
On 2002.06.05 13:00 Gary Hennigan wrote: Ian D. Stewart [EMAIL PROTECTED] writes: Right now, when booting my linux box, the system clock is off by four hours (I'm guessing it is set to GMT). I can reset the clock using date, but this is starting to get a bit tedious. Is there a way to automate this process and/or convince Linux to set the system clock to local time? You can change that by setting UTC=yes|no in /etc/default/rcS. This setting should be yes if your HW clock is set to UTC (aka GMT) or no if your HW clock is set to local time. So first check to see what your HW clock is set to by using the command hwclock --show. You can then use hwclock to either set your system time from your HW clock, or vice versa. This is done automatically at boot by the hwclock* scripts in /etc/init.d The main thing is setting UTC to the appropriate yes or no in /etc/default/rcS, assuming, of course, that the problem is the fact that your HW clock setting doesn't match the UTC setting. Thanx Gary. That did the trick! Apparently my hardware clock is reporting local time, not GMT. I edited /etc/default/rcS to set UTC=no and manually reset the system clock via 'hwclock --hctosys --localtime' Thanx also to everyone else who responded, and for the general education re: hwclock. Learn something new every day... ;) Ian -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time?
tzconfig - sets your timezone date - sets your system clock hwclock - sets your hardware clock xntp - keeps your system time correct by reference to Internet timeservers What is the difference between hwclock and clock, between xntp and netdate? And which package contains hwclock and xntp? Thanks, Mark. __ _\/___\__/___Mark_Phillips___/ \__/_\__/--\__/[EMAIL PROTECTED]/ \__/HE___\__/--APTAIN/ \__/_\__/--\__/__/ /__To be is to do.__I. Kant___/ \__/__\__/___/ /__To do is to be.__A. Sartre_/ /__I am.God___/ /__Jesus did.___/ -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time?
On Fri, 17 Apr 1998, Mark Phillips wrote: tzconfig - sets your timezone date - sets your system clock hwclock - sets your hardware clock xntp - keeps your system time correct by reference to Internet timeservers What is the difference between hwclock and clock, between xntp and netdate? And which package contains hwclock and xntp? hwclock is just newer than clock and replaces it. netdate and xntpd use different protocols for communication with the time servers. The protocol used by netdate gives the time with an accuracy of about one second, the ntp protocol is more accurate. Another big difference between netdate and xntpd is that netdate sets the clock once while xntpd is a daemon that connects to the server at regular intervals and tries to correct drift even when not online. Remco -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time?
Mark Phillips wrote: What is the difference between hwclock and clock, between xntp and netdate? Remco answered that. And which package contains hwclock and xntp? hwclock is in util-linux xntp is in xntp (This is on hamm.) -- Oliver Elphick[EMAIL PROTECTED] Isle of Wight http://www.lfix.co.uk/oliver PGP key from public servers; key ID 32B8FAA1 Come to me, all you who labour and are heavily laden, and I will give you rest. Take my yoke upon you, and learn from me; for I am meek and lowly in heart, and you shall find rest for your souls. For my yoke is easy and my burden is light.(Matthew 11: 28-30) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Setting system time?
How do I set system clock (the RTC) on a fairly standard, however old, PC which is running Debian GNU/Linux? // Jonas [EMAIL PROTECTED] [2:201/262.37] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time?
On Thu, 16 Apr 1998, Jonas Bofjall wrote: How do I set system clock (the RTC) on a fairly standard, however old, PC which is running Debian GNU/Linux? hwclock --systohc or hwclock --utc --systohc if your clock is set to GMT aka UTC Cheers, Joost -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Setting system time?
Jonas Bofjall wrote: How do I set system clock (the RTC) on a fairly standard, however old, PC which is running Debian GNU/Linux? tzconfig - sets your timezone date - sets your system clock hwclock - sets your hardware clock xntp - keeps your system time correct by reference to Internet timeservers -- Oliver Elphick[EMAIL PROTECTED] Isle of Wight http://www.lfix.co.uk/oliver PGP key from public servers; key ID 32B8FAA1 Come to me, all you who labour and are heavily laden, and I will give you rest. Take my yoke upon you, and learn from me; for I am meek and lowly in heart, and you shall find rest for your souls. For my yoke is easy and my burden is light.(Matthew 11: 28-30) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
