IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 17 November 2017 (all times are UTC)
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| 00:47 | <eu^173-24-31-145> Hello
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| 00:47 | I was wondering if this project monitors history?
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| 10:51 | <pedro__> Hello everybody
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| 10:51 | <alkisg> Hello
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| 10:53 | <pedro__> My name is Pedro and I'm a teacher. I use Epoptes and today, when I started it I couldn't see any computer of the students
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| 10:53 | <alkisg> pedro__: are you using ltsp, i.e. netbooted computers?
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| 10:54 | <pedro__> They are fat clients
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| 10:54 | <alkisg> Do they have a local linux installation in their disks?
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| 10:54 | <pedro__> Yes, they have
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| 10:54 | <alkisg> Which distribution and which version?
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| 10:55 | <pedro__> Yesterday I had problems with two of the computers and executed sudo epoptes-client -c on them, but I executed it on the server too. Could this be the problem?
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| 10:56 | Ubuntu 16.04.3 LTS
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| 10:57 | <alkisg> Yes, if you executed epoptes-client -c on the server, it erased its certificate
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| 10:57 | Run this, on all your computers: ls -l /etc/epoptes
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| 10:57 | If you see any files that are zero size, they have issues and need to be copied from elsewhere
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| 10:59 | <pedro__> Ok, there are some of the computers with server.crt with zero size
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| 11:01 | <alkisg> pedro__: you need to copy that file from a correct computer, to the other damaged computers
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| 11:01 | To the server too
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| 11:01 | <pedro__> Can I copy any certificate from any computer to the rest of them?
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| 11:01 | <alkisg> Yes
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| 11:01 | <pedro__> Ok thenks. I'll try that
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| 11:01 | <alkisg> They should be exactly the same
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| 11:01 | You can run this, to verify: md5sum /etc/epoptes/*
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| 11:02 | If you see the same md5sum, it's the same file
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| 11:04 | <neops> hello
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| 11:04 | hello I would like to know if we can make a server linux leger LSTP and boot on a mac
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| 11:04 | <alkisg> What does "leger" mean?
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| 11:06 | <neops> ltsp alkisg
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| 11:06 | I would like to have a Linux Terminal Server Project (Debian or Centos) but boot on a Mac
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| 11:07 | <alkisg> neops: the server would be mac or the client would be mac?
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| 11:10 | <neops> no Mac just Client
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| 11:10 | <alkisg> neops: can your mac boot debian normally? is it a usual x86 architecture?
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| 11:13 | <neops> yes alkisg mac book pro 2011 intel
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| 11:13 | core 2 duo
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| 11:13 | x86..
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| 11:14 | <alkisg> neops: if it boots debian normally, then it will boot ltsp normally as well
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| 11:15 | <neops> ok I'll try this weekend
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| 11:15 | thx alkisg
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| 11:15 | <alkisg> np
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| 11:15 | pedro__: if you put the .crt file on the server, and restart the server, then you can copy it to the other clients by just running `epoptes-client -c`
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| 11:19 | <pedro__> Thanks
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| 11:42 | <pedro__> It worked!
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| 11:42 | Thank you
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| 11:45 | <alkisg> You're welcome :)
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| 11:46 | <pedro__> Now I can see all the computer except one. It has got the same certificate but it doesn't appear
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| 11:48 | <alkisg> Check its bios date, if it's wrong, then the certificate is invalid
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| 11:48 | If so, replace the cmos battery
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| 11:48 | <pedro__> I'm going to check it
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| 11:49 | * alkisg needs to leave, ciao for now... | |
| 11:51 | <pedro__> Goodbye and thanks again
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| 18:47 | <JuJUBee> My students pointed out today that the clocks on my fat clients are wrong. They are displaying GMT I think (5 hours off from EST)
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| 18:52 | <vagrantc> i've heard this reported a few times recently...
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| 18:52 | distro, release, ltsp version?
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| 18:52 | !ltsp-info
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| 18:52 | <ltsp> ltsp-info: please run ltsp-info and paste the output to http://ltsp.pastebin.com
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| 18:54 | <JuJUBee> vagrantc, Running ubuntu 16.04 https://pastebin.com/ad7tFTLR
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| 18:55 | <vagrantc> looks like you have both an amd64.img and fat-amd64.img ... do you know which is actually being used?
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| 18:57 | <JuJUBee> Pretty sure only the amd64
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| 18:58 | <vagrantc> JuJUBee: using a client chroot? ...
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| 18:58 | <JuJUBee> I don't have /opt/ltsp/fat-amd64 dir
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| 18:58 | <vagrantc> JuJUBee: check the contents of /opt/ltsp/amd64/etc/timezone
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| 18:58 | JuJUBee: ls -l /opt/ltsp/amd64/etc/timezone
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| 18:58 | <JuJUBee> Etc/UTC
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| 18:59 | <vagrantc> that would most likely explain it
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| 18:59 | is it a symlink or a regular file?
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| 18:59 | <JuJUBee> regular file
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| 19:00 | <vagrantc> check the contents of the server's /etc/timezone, and if it's what you want, you should be able to copy it into the chroot and rebuild the image
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| 19:00 | that *should* work
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| 19:00 | why it isn't doing that out of the box is a bit mysterious
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| 19:01 | is the server's /etc/timezone a symlink?
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| 19:01 | <JuJUBee> no
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| 19:02 | This seems to have happened recently, maybe around time change...
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| 19:02 | I'll change it and rebuild the image
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| 19:02 | thanks vagrantc
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| 19:02 | <vagrantc> hmmm... there's a subtle difference in the ubuntu and debian timezone configuration for ltsp-build-client ... that might be the issue
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| 19:03 | JuJUBee: did you rebuild the image around then?
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| 19:03 | <JuJUBee> no, not since late September
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| 19:03 | <vagrantc> well, the image wouldn't switch timezone without rebuilding it
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| 19:03 | <JuJUBee> I rebuilt it Tuesday to see if that would fix it, but it did not
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| 19:04 | <vagrantc> ah, simpler option: set TIMEZONE= in lts.conf
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| 19:05 | hrm... that might be broken
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| 19:05 | well, it's worth trying...
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| 19:06 | <JuJUBee> it must be broken I already had that set
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| 19:07 | <vagrantc> JuJUBee: ls -l /opt/ltsp/amd64/etc/localtime and /etc/localtime
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| 19:07 | er, drop the "and" :)
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| 19:07 | * vagrantc half-thinking in shell and half in prose | |
| 19:08 | <JuJUBee> lrwxrwxrwx 1 root root 27 Feb 6 2017 /opt/ltsp/amd64/etc/localtime -> /usr/share/zoneinfo/Etc/UTC
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| 19:10 | <vagrantc> hmmm... that might break the way TIMEZONE is implemented, not sure
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| 19:10 | <JuJUBee> Question is why is that pointing to Etc/UTC and not America/New_York
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| 19:11 | <vagrantc> because the code that generates the chroot doesn't touch that file
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| 19:11 | * vagrantc suspects the timezone handling in ubuntu changed in some release and the ltsp-build-client plugins never got updated to reflect that | |
| 19:12 | <JuJUBee> so should I re-create the link to localtime?
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| 19:12 | <vagrantc> ltsp-build-client hasn't really been well maintained ... mostly switched to using ltsp-pnp style in recent times
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| 19:12 | <JuJUBee> what is the main advantage of using pnp for me?
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| 19:13 | <vagrantc> JuJUBee: if you could file a bug in launchpad, that would mean the issue doesn't get lost
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| 19:13 | JuJUBee: people are actually testing the code path?
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| 19:14 | JuJUBee: also, looks like you at least experimented with fat clients at some point, and this is easier to maintain with ltsp-pnp
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| 19:14 | <JuJUBee> Should I note that the symlink points to the wrong timezone?
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| 19:14 | I use fat clients
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| 19:14 | I think I copied the old amd64 image to fat-amd64 as a backup at one point
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| 19:14 | <vagrantc> basically, you just install the server with the software you want, and then build an image out of that
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| 19:15 | <JuJUBee> But only have fat clients for now.
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| 19:15 | <vagrantc> no separate chroot to maintain
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| 19:15 | <JuJUBee> the thought of starting over from scratch worries me as the school year is well underway.
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| 19:15 | <vagrantc> indeed
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| 19:15 | JuJUBee: have you upgraded the chroot ever?
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| 19:15 | <JuJUBee> yes
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| 19:16 | I stick with lts releases only
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| 19:17 | <vagrantc> JuJUBee: in the bug report, include the ls -l /etc/timezone /etc/localtime /opt/ltsp/amd64/etc/timezone /opt/ltsp/amd64/etc/localtime, your lts.conf (sanitized, if you need to), the ltsp-info output
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| 19:17 | JuJUBee: and also the contents of /etc/timezone and /opt/ltsp/amd64/etc/timezone
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| 19:17 | <JuJUBee> OK, working on it now...
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| 19:18 | <vagrantc> might also be worth checking if such a bug report already exists
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| 19:18 | https://bugs.launchpad.net/ltsp/+bug/1596448
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| 19:18 | following up to that might be good
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| 19:19 | https://bugs.launchpad.net/ltsp/+bug/1660392
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| 19:19 | <JuJUBee> do you want me to submit the ls -l for each of those initial dirs or only the first and contents of the rest?
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| 19:19 | <vagrantc> and/or that one
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| 19:21 | actually, the latter bug looks more appropriate
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| 19:22 | and that would also affect using TIMEZONE in lts.conf ...
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| 19:22 | which wouldn't matter weather you're using ltsp-pnp or a chroot
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| 19:28 | <JuJUBee> Done, I commented on second bug
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| 19:32 | SO I edited the incorrect timezone file to America/New_York and after rebuilding the image and rebooting client the time seems correct
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| 19:32 | We will see what happens Monday morning...
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| 19:32 | Thanks for the assistance
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| 19:33 | Gotta go...
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| 20:02 | <JerryT> Any reason why a ltsp fatclient can't access the libraries?
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| 20:02 | Or open a socket bind()???
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| 20:02 | Thinclients have no issues with either.
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| 20:04 | <||cw> JerryT: what libraries?
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| 20:04 | <JerryT> ./usr/lib
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| 20:05 | Really any of them. The application looks in several locations and has an issue finding them. They're on the Host machine, and the image was rebuilt.
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| 20:05 | <||cw> and they made it into the image?
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| 20:06 | if the client boots to a desktop, it's accessing /usr/lib just fine
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| 20:07 | <vagrantc> JerryT: is /usr on a separate partition?
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| 20:07 | <JerryT> Yah, I'm not sure what the issue is. Maybe LD_LIBRARIES or something is flaky. I'm not sure.
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| 20:08 | vagrantc, no, everything resides on /dev/sda1
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| 20:14 | <vagrantc> network flakiness?
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| 20:14 | seems more likly than LD_LIBRARIES going wonky
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| 20:15 | though that should usually crash a client
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| 20:46 | <alkisg> JerryT: what is the command that you run and the error message that you see? put them to pastebin...
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| 20:57 | <JerryT> SSH_FOLLOW_SYMLINKS=False
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| 20:58 | What's that do exactly?
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| 20:58 | Or what's it's affect on systems?
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| 21:09 | <alkisg> Answer mine first :P
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| 21:09 | It doesn't affect the nbd image
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| 21:09 | /usr, /lib etc are accessed via nbd, not ssh
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| 21:10 | It allows /home/user/folder symlink to follow the contents to /some/server/dir
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| 21:32 | <alkisg> (follow them from the client to the server)
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