IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 21 April 2017 (all times are UTC)
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| 05:54 | <ZAJDAN> hi...on Thin client sudoers ... possible to use?
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| 06:01 | <alkisg> ZAJDAN: the thin client session is running on the server so of course it's possible to use sudo there, normally
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| 06:01 | If you're talking about fat clients or localapps, say so...
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| 06:01 | !sudo
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| 06:01 | <ltsp> I do not know about 'sudo', but I do know about these similar topics: 'sudoers', 'fat-sudo'
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| 06:01 | <alkisg> !sudoers
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| 06:01 | <ltsp> sudoers: Not recommented for security reasons: RCFILE_01="echo USER ALL=NOPASSWD: /path/to/program >> /etc/sudoers". USER and /path/to/program can also be ALL.
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| 06:04 | <ZAJDAN> why I ask is , because I need run on thin client via ltsp-localapps xterm as root
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| 06:06 | <alkisg> When you want to ask for localapps, say so, it's different...
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| 06:06 | See what I wrote above about sudoers
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| 06:06 | It works for localapps and for fat clients
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| 06:06 | <ZAJDAN> or at least in the xterm command under root
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| 06:18 | when I will modify /etc/sudoers ..is also need to update-image?
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| 06:19 | I think yes, but two times ask, one time cut
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| 06:33 | <alkisg> Don't modify sudoers
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| 06:33 | Put the command above in lts.conf
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| 06:33 | You don't need to run ltsp-update-image when you modify lts.conf
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| 06:39 | <ZAJDAN> you mean the RCFILE_01 ...?
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| 06:40 | <alkisg> Yes
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| 06:43 | <ZAJDAN> ok
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| 07:00 | and this options I could put for each client individually?
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| 07:01 | <alkisg> Again, all lts.conf options can be put either globally or per client
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| 07:01 | You don't have to ask it for each option again and again...
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| 07:01 | <ZAJDAN> ok..will remember
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| 07:02 | so I have add into lts.conf : RCFILE_01="echo operator-2 ALL=NOPASSWD: /usr/bin/softwedge >> /etc/sudoers"
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| 07:04 | client is up and I try: ltsp-localapps xterm -e sudo softwedge -c /dev/ttyS3 ...and Iam asked for password
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| 07:04 | <alkisg> Run ltsp-localapps xterm
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| 07:04 | There, run sudo softwedge -c /dev/ttyS3
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| 07:04 | If you're asked for a password, see if your user is indeed named operator-2
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| 07:04 | And if /etc/rc.local does have that line
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| 07:05 | <ZAJDAN> I am asked for password even when firstly rrun just xterm and in xterm sudo softwedge...
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| 07:05 | gonna check out the rc.local
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| 07:09 | true...rc.local contains similar command which i tried yesterday....but it was without sudo
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| 07:10 | <alkisg> Do you have epoptes in your installation?
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| 07:10 | <ZAJDAN> yes
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| 07:10 | <alkisg> !vnc-edide
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| 07:10 | <ltsp> vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
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| 07:12 | <ZAJDAN> ok...just moment..I am connected to the machine via ssh
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| 07:18 | ltsp/alkisg: connected
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| 07:21 | <alkisg> ZAJDAN: you have an error in your rc.local, and so the RCFILE commands don't run
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| 07:21 | The error is that you try to run xterm before Xorg launches
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| 07:21 | Remove that xterm command from rc.local
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| 07:22 | <ZAJDAN> from rc.local it was deleted yet..but so far did not update-image
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| 07:22 | <alkisg> OK, fix it then
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| 07:22 | <ZAJDAN> changes in rc.local needs update-image ?
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| 07:23 | <alkisg> ...yes
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| 07:23 | <ZAJDAN> ok..update is running
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| 07:24 | then I will reboot client
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| 07:36 | <ZAJDAN> alkisg: image has been updated
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| 07:36 | client machine is newly booted
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| 07:39 | now when I run 'ltsp-localapps xterm -e sudo softwedge -c /dev/ttyS3' ...is not problem about password
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| 07:41 | but barcode scanner doesnt give output ....when I run 'ltsp-localapps xterm' from xterm 'sudo softwedge -c /dev/ttyS3'...scanner works correctly
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| 07:42 | could be a problem that I chain a few commands in ltsp-localapps ...?
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| 07:50 | <alkisg> ZAJDAN: from xterm, run again xterm -e sudo ...
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| 07:50 | So that you see that the command you're using is wrong
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| 07:50 | <ZAJDAN> ok...will try
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| 07:54 | alkisg: I have xterm window and from there I have run command 'xterm -e sudo softwedge -c /dev/ttyS3' ...xterm window blink(like when open new window)..and nothing happened...no message, nothing
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| 08:13 | alkisg: SOLVED -> ltsp-localapps xterm -e "sudo softwedge -c /dev/ttyS3 && bash"
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| 23:48 | <vagrantc> w 4
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| 23:48 | * vagrantc wave | |