osascript command not timing out?
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osascript command not timing out?
by huntc
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Hi there,
I've experienced a weird situation whereby I have an application that generally runs quite well, but ended up in an U state (ps command, uninterruptible wait). Now the process probably hung for some reason (cannot now reproduce) and a "shutdown -r now" failed... re-enforcing the idea that my process hung in a U state I suppose. Thing is, prior to the restart, I had a number of osascript commands from the shell and they remained in an S state (sleep for less than 20 seconds). I'd reckon that these processes had actually been around for a while so I'm a little mystified by that state. I would have thought they'd be in an 'I' (Idle) state. No matter, what really bugs me is that I would have thought my AppleScript tell statements should have timed out after a minute and disappeared. The osascript commands are invoked from cron in case that's useful. Any ideas on why these osascript invoked AppleScript tell commands to my U state application shouldn't have timed out? Could it have been that no live target process was found for the tell statement, it tried to start one, and then somehow got into trouble? BTW: Mac OS X 10.4. Cheers, -C _______________________________________________ MacOSX-admin mailing list MacOSX-admin@... http://www.omnigroup.com/mailman/listinfo/macosx-admin |
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Re: osascript command not timing out?
by Dan Shoop
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On Mar 10, 2008, at 6:22 AM, Christopher Hunt wrote: > Hi there, > > I've experienced a weird situation whereby I have an application > that generally runs quite well, but ended up in an U state (ps > command, uninterruptible wait). Now the process probably hung for > some reason (cannot now reproduce) and a "shutdown -r now" failed... > re-enforcing the idea that my process hung in a U state I suppose. > > Thing is, prior to the restart, I had a number of osascript commands > from the shell and they remained in an S state (sleep for less than > 20 seconds). I'd reckon that these processes had actually been > around for a while so I'm a little mystified by that state. I would > have thought they'd be in an 'I' (Idle) state. > > No matter, what really bugs me is that I would have thought my > AppleScript tell statements should have timed out after a minute and > disappeared. The osascript commands are invoked from cron in case > that's useful. > > Any ideas on why these osascript invoked AppleScript tell commands > to my U state application shouldn't have timed out? Perhaps the AppleScript *did* timeout. Perhaps then it's parent then lost connection to this it's child and hence the state it got in? -dhan ------------------------------------------------------------------------ Dan Shoop Computer Scientist iWiring / U.S. Technical Services shoop@... AOL IM .................... iWiring Nextel .................... 1-714-363-1174 Operations TOC (24/7) ..... 1-866-901-USTS USTS Offices .............. 1-714-374-6300 For immediate response for urgent matters please speak to the Duty Officer at the USTS Tactical Operations Center (above) who can reach me by radio. _______________________________________________ MacOSX-admin mailing list MacOSX-admin@... http://www.omnigroup.com/mailman/listinfo/macosx-admin |
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Remote desktop to a mac on a private LAN
by Christopher Hunt-2
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Hi there,
I have a Mac connected wirelessly on a private LAN and would like to be able to get to it; principally for accessing it via SSH. The remote Mac is able to establish a connection to the internet. I'm thinking that the only way for me to connect to the remote Mac is to have it connect to a VPN automatically. I believe that this can be achieved by having Safari access a specific IP address that I declare. Are there other methods that I might want to consider when accessing remote Macs on private LANs? Kind regards, Christopher _______________________________________________ MacOSX-admin mailing list MacOSX-admin@... http://www.omnigroup.com/mailman/listinfo/macosx-admin |
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Re: Remote desktop to a mac on a private LAN
by Neil Laubenthal
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Yeah . . . lots of ways to do this, depending on what you want to do.
1. If you've got a dynamic IP from your ISP . . .you can get a domain name through GoDaddy or anybody cheap and then use the DynamicDNS client built into most current routers to redirect traffic christopherhunt.com to whatever your current IP is. With a static IP from your ISP you can just see what it is and use that. Set up your router to forward port 22 to your internal machine and you can ssh away. Things to watch out for here are your TOS with your ISP . . .does it allow you to do incoming ssh and/or is the port blocked. This will give you ssh access . . . if you want you can then use port forwarding on your remote Mac to connect over an SSL tunnel with VNC for direct desktop access. 2. Sign up for a free account at logmein.com and install the client on your Mac at home . . .then go to www.logmein.com from any web browser and you get the desktop on your home Mac. Logmein is a third party VPN . . .works very nicely. There are pay options at logmein with additional features as well as some through Citix (gotomypc.com) as well as other similar options. Basic logmein is free though and works fine. 3. Timbuktu Pro also works but costs money. 4. You can set up a direct VPN to your Mac . . .needs to be OK with your ISP TOS and you'll need to forward the right ports at your router. -- neil Quoting Christopher Hunt <huntc@...>: > Hi there, > > I have a Mac connected wirelessly on a private LAN and would like to be > able to get to it; principally for accessing it via SSH. The remote Mac > is able to establish a connection to the internet. _______________________________________________ MacOSX-admin mailing list MacOSX-admin@... http://www.omnigroup.com/mailman/listinfo/macosx-admin |
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Re: Remote desktop to a mac on a private LAN
by Christopher Hunt-2
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Hi Kurt,
Thank you for your detailed reply. I do indeed know all about SSH and often use it in the way you prescribe - when the remote host IP's address is known to me. I probably didn't explain my scenario very well. The remote host sits behind a router and is on a private LAN i.e. it does not have its own public ip address, but it can establish a connection with the internet. I am also not in a position to port forward traffic at the router to it. 'hope that this is a better explanation. Kind regards, Christopher P.S. I don't *think* we know each other. Here's my blog: http://christopherhunt-software.blogspot.com/ _______________________________________________ MacOSX-admin mailing list MacOSX-admin@... http://www.omnigroup.com/mailman/listinfo/macosx-admin |
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Re: Remote desktop to a mac on a private LAN
by Mike Friedman-5
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On Aug 21, 2009, at 3:09 PM, Christopher Hunt wrote: > On 22/08/2009, at 4:59 AM, macosx-admin-request@... wrote: > >> 1. If you've got a dynamic IP from your ISP . . .you can get a domain >> name through GoDaddy or anybody cheap and then use the DynamicDNS >> client built into most current routers to redirect traffic >> christopherhunt.com to whatever your current IP is. With a static IP >> from your ISP you can just see what it is and use that. Set up your >> router to forward port 22 to your internal machine and you can ssh >> away... > Thanks for this - I cannot port forward though. Sorry for not > previously mentioning that. > >> >> 2. Sign up for a free account at logmein.com and install the client >> on >> your Mac at home . . .then go to www.logmein.com from any web browser >> and you get the desktop on your home Mac. Logmein is a third party >> VPN >> . . .works very nicely. There are pay options at logmein with >> additional features as well as some through Citix (gotomypc.com) as >> well as other similar options. Basic logmein is free though and works >> fine. > Thanks - I will investigate this. > >> >> 3. Timbuktu Pro also works but costs money. > OK - I presume that Timbuktu Pro can establish a connection from the > remote host. I shall investigate. > > Thanks for your replies. > If you can't port forward then use LogMeIn. It's completely free...it's not entirely what you were looking for (you'll get a full remote control session over the machine)...It's not quite a VPN (that feature is Windows only) but it's very very useful and I use it to support three offices full of Mac clients (as well as hundreds of Windows machines). ======================= Mike Friedman MGF Consulting Computers without Attitude http://www.mgfconsulting.net 415-823-9990 Instant Message AIM/Yahoo: sfmike64 _______________________________________________ MacOSX-admin mailing list MacOSX-admin@... http://www.omnigroup.com/mailman/listinfo/macosx-admin |
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Re: Remote desktop to a mac on a private LAN
by Kurt Werle-5
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On Aug 21, 2009, at 3:03 PM, Christopher Hunt wrote: > Hi Kurt, > > Thank you for your detailed reply. I do indeed know all about SSH > and often use it in the way you prescribe - when the remote host > IP's address is known to me. > > I probably didn't explain my scenario very well. The remote host > sits behind a router and is on a private LAN i.e. it does not have > its own public ip address, but it can establish a connection with > the internet. I am also not in a position to port forward traffic at > the router to it. > > 'hope that this is a better explanation. So you can't ssh to the router, and you can't configure the router to forward any ports. And you probably also don't have a system outside the LAN that you can connect to, either? If you have an internet addressable host at your desposal, then you can ssh -g -R 122:127.0.0.1:22 internet.addressable.host then you can ssh to that host on port 122 and get forwarded to your machine. Probably that would require a daemon and passwordless ssh key. Otherwise you're more or less out of luck. There are services you can get that will do the same kind of thing: "Back to My Mac" being a prime example. Kurt --- I am changing my email address to kurt@... http://www.CircleW.org/~kurt/ _______________________________________________ MacOSX-admin mailing list MacOSX-admin@... http://www.omnigroup.com/mailman/listinfo/macosx-admin |
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Re: Remote desktop to a mac on a private LAN
by Christopher Hunt-2
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Thanks for this. I like the reverse ssh idea. Here's a launchd plist I
found that should help: http://www.automatthew.com/2007/09/launchd-plist-to-run-reverse-ssh-tunnel.html Kind regards, Christopher > So you can't ssh to the router, and you can't configure the router > to forward any ports. And you probably also don't have a system > outside the LAN that you can connect to, either? If you have an > internet addressable host at your desposal, then you can > ssh -g -R 122:127.0.0.1:22 internet.addressable.host > then you can ssh to that host on port 122 and get forwarded to your > machine. Probably that would require a daemon and passwordless ssh > key. _______________________________________________ MacOSX-admin mailing list MacOSX-admin@... http://www.omnigroup.com/mailman/listinfo/macosx-admin |
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