January 2008 - Darwin-dev - lists.apple.com

Re: screen clobbers PATH
by seebs＠seebs.net 30 Jan '08

30 Jan '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com In message <F9310253-CC25-472B-8C7B-60D488DADB60(a)elis.ugent.be>, Jonas Maebe wr ites: >It indeed also happens on my MacBook with 10.5.1 (bash account, also >with fink installed, but executing the Leopard default screen). And not on mine, also 10.5.1, with ksh, and no fink. -s _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: screen clobbers PATH
by Jonas Maebe 30 Jan '08

30 Jan '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 30 Jan 2008, at 22:29, Martin Costabel wrote: Jonas _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… I can't believe I am the only one seeing this. I have seen this on every machine running Leopard I have looked at and on every account I have created or could get my fingers on. It indeed also happens on my MacBook with 10.5.1 (bash account, also with fink installed, but executing the Leopard default screen). This email sent to site_archiver(a)lists.apple.com

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Re: screen clobbers PATH
by Martin Costabel 30 Jan '08

30 Jan '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla Thunderbird 1.0.2 (Macintosh/20050317) In message <484969.75807.qm(a)web83407.mail.sp1.yahoo.com>, David Mackler writes: The most common problem I've had with PATH getting clobbered has involved system profile/startup scripts clobbering PATH, and the shell happening to trigger this. It is definitely /usr/bin/screen that is clobbering PATH. -- Martin _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Peter Seebach wrote: Hmmm. No screen installed by fink. David, do you perhaps have the Fink "source /sw/bin/init.sh" startup command in your ~/.bashrc script? This non-standard placement would explain that you get the Fink PATH components when you run "screen $SHELL", because then you would get them in any shell, regardless of the environment it runs in. Look also at /usr/libexec/path_helper. Thanks for guessing, but none of these explains the behavior I am seeing. The path_helper script would additionally place /usr/local/bin and /usr/X11/bin on the PATH, which I am not getting. I also put tracers in all the shell startup scripts, and I see that the only ones that are executed are /etc/csh.cshrc and ~/.tcshrc (I have tcsh as login shell). In none of these scripts there is anything influencing PATH. I am setting my PATH in scripts run from /etc/csh.login. I even created a new account with bash as login shell, and I am seeing the exact same behavior; this time it is only ~/.bashrc that is executed. I can't believe I am the only one seeing this. I have seen this on every machine running Leopard I have looked at and on every account I have created or could get my fingers on. This email sent to site_archiver(a)lists.apple.com

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Re: Cancel Sleep
by Jonas Maebe 30 Jan '08

30 Jan '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 30 Jan 2008, at 21:15, Amanda Walker wrote: I've had ssh sessions survive several hours sleeping already. Jonas _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Why is sleep an interruption? One of the things that really annoys me is putting my laptop to sleep momentarily (or via energy saver), waking back up, and all of my network connections have been closed. I don't experience this. MY ssh sessions perfectly survive sleep/wake- up, as long as a) I get the same ip address on wake up b) the remote session didn't try to send something long enough before the wake up (otherwise it will notice the other end isn't there anymore) c) the remote server didn't close the connection due to inactivity This email sent to site_archiver(a)lists.apple.com

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Re: Cancel Sleep
by Amanda Walker 30 Jan '08

30 Jan '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com --Amanda _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… On Jan 30, 2008, at 2:09 PM, Chris Page wrote: On Jan 30, 2008, at 08:16 AM, Uli Kusterer wrote: What happens if you start a file copy to/from a server in Finder and then put the machine to sleep? I hope it either warns the user or completes the copy before sleeping. Why? I'd much rather it just pick up where it left off when it wakes back up. This email sent to site_archiver(a)lists.apple.com

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Re: Cancel Sleep
by Amanda Walker 30 Jan '08

30 Jan '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com --Amanda _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… On Jan 30, 2008, at 11:16 AM, Uli Kusterer wrote: On 31.12.2007, at 19:53, Michael Smith wrote: If the user does not want the system to sleep, the user *should*not*tell*the*system*to*sleep*. Users make mistakes. One of Jef Raskin's basic ideas in the design of the Macintosh was "forgiveness", to let the user undo dangerous actions, or to warn them before they do them. Neither is possible if the user is about to lose data because an application is interrupted in communication with the network or another external entity. Why is sleep an interruption? One of the things that really annoys me is putting my laptop to sleep momentarily (or via energy saver), waking back up, and all of my network connections have been closed. Nothing requires this. TCP is perfectly happy to work across arbitrarily long pauses. As a data point, my Sony running FreeBSD does not have this problem. I can sleep it overnight, wake it back up, and all of my ssh sessions, etc. are still up. I've worked on a product which was essentially a background program that was doing live device communication. Often, users chose "Sleep" from the menu bar and accidentally interrupted the communication, causing the device to suddenly stop and files to be truncated prematurely. Why would this truncate data, and not just pause and pick right back up later? Any number of things can cause pauses or delays, after all, not just sleep. This email sent to site_archiver(a)lists.apple.com

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Re: Cancel Sleep
by Chris Page 30 Jan '08

30 Jan '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Jan 30, 2008, at 08:16 AM, Uli Kusterer wrote: -- Chris Page - Dylan Programmer Open Source Dylan Compilers: <http://www.opendylan.org/> _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… On 31.12.2007, at 19:53, Michael Smith wrote: It might be reasonable to ask Apple for a preference which dissociates closing the lid from the act of putting the system to sleep, although I would strongly expect that this would be refused for several sensible reasons, but it is *not* reasonable to ask for a programmatic way to subvert the user's intent in the fashion the OP desires. I've worked on a product which was essentially a background program that was doing live device communication. Often, users chose "Sleep" from the menu bar and accidentally interrupted the communication, causing the device to suddenly stop and files to be truncated prematurely. What happens if you start a file copy to/from a server in Finder and then put the machine to sleep? I hope it either warns the user or completes the copy before sleeping. This email sent to site_archiver(a)lists.apple.com

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Re: screen clobbers PATH
by seebs＠seebs.net 30 Jan '08

30 Jan '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com In message <484969.75807.qm(a)web83407.mail.sp1.yahoo.com>, David Mackler writes: >Hmmm. No screen installed by fink. The most common problem I've had with PATH getting clobbered has involved system profile/startup scripts clobbering PATH, and the shell happening to trigger this. Look also at /usr/libexec/path_helper. -s _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: screen clobbers PATH
by David Mackler 30 Jan '08

30 Jan '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com ----- Original Message ---- > From: Martin Costabel <costabel(a)wanadoo.fr> > To: David Mackler <david(a)mackler.net> > Cc: darwin-dev(a)lists.apple.com > Sent: Wednesday, January 30, 2008 8:24:16 AM > Subject: Re: screen clobbers PATH > Are you sure this is /usr/bin/screen and not /sw/bin/screen? > > As I mentioned, I don't see the problem with Fink's screen, although > it > > is the same version as Apple's. It is also new in Leopard, it was not > present in Tiger. [david@FourSpeed:~ 2013]$ l /sw/bin/screen ls: /sw/bin/screen: No such file or directory [david@FourSpeed:~ 2014]$ which screen screen is /usr/bin/screen Hmmm. No screen installed by fink. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: screen clobbers PATH
by Martin Costabel 30 Jan '08

30 Jan '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Thunderbird 2.0.0.9 (Macintosh/20071031) David Mackler wrote: /usr/bin:/bin:/usr/sbin:/sbin No fix, but neither do I see the problem: (from my screen session) [david@FourSpeed:~ 2006]$ echo $PATH /sw/bin:/sw/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/X11R6/bin Are you sure this is /usr/bin/screen and not /sw/bin/screen? Using your .screenrc (minus the "links" line), I still see the same problem. -- Martin _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… From: Martin Costabel <costabel(a)wanadoo.fr> [] On Leopard, in the shell started by /usr/bin/screen, the PATH variable is set to All other environment variables, for example MANPATH or CLASSPATH, are copied from the environment of the shell from which screen is started. Only PATH is crippled to this minimalist value. This did not happen in Tiger, and it does not happen with other builds of screen, for example from Fink. Does anyone have an explanation for this annoying behavior, or, more importantly, a fix? As I mentioned, I don't see the problem with Fink's screen, although it is the same version as Apple's. It is also new in Leopard, it was not present in Tiger. What do you have in your .screenrc? How are you starting screen? I don't have any ~/.screenrc, never had. Usually I use 'screen -ls' to recall where I am and then 'screen -R'. I could use 'screen tcsh -l' and the right PATH would come back, but I cannot do this with 'screen -R'. Here is my .screenrc: [david@FourSpeed:~ 2007]$ cat .screenrc # Turn off the startup message. startup_message off # increase default scrollback buffer and use UTF-8 defscrollback 1000 defutf8 on # display activity message by default #defmonitor on # Do not use xterms alternate window buffer (won't add lines to scrollback bfr) #termcapinfo xterm|xterms|xs|xterm-color ti=\E7\E[?47l # Set the caption to the active windows caption always "%l: %-Lw%{= BW}%50>%n%f* %t%{-}%+Lw%<" # New screens for various fixed processes screen -t console 0 tail -n 30 -F /var/log/system.log screen -t links 1 /sw/bin/links $HOME/.links/startpage.html # Create a window and use the default shell screen $SHELL # Display the first window select 0 This email sent to site_archiver(a)lists.apple.com

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