Version control – Google Docs: Is there no way to release the version history and changes for read-only users?

If that's true, it's very unfortunate … One of the most useful types of information you provide consumers with in their documentation is that they can easily see what you've changed throughout the document without them It must retain an older copy of the document itself and find out manually what is different. I regularly send an email to Word Docs with information about changes to provide this benefit to the readers of the material I write. I understand that one-stop online collaboration plays a key role, but not necessarily a reason to remove that feature.

The simple solution to this (in my view as a user) would be to provide two additional levels of access: "View and show versions" and "Comment and show versions".

Thank you very much. John

qt creator – QTCreator: Same history as in IntellJ IDEA

In IntelliJ IDEA I can browse the history of open files with Ctrl + Alt + Left / Right. I could easily reproduce the links in QtCreator.

My problem is that the file history in IntelliJ behaves like the browsing history of a common internet browser. While in QtCreator, the history order changes when I return to an older file.

I have the following files in my history (indicated with *):

A.cpp B.cpp C.cpp D.cpp *

I press CTRL + Left twice (ie GotoPreviousInHistory) to watch B.cpp. Now the history in QtCreator looks like this:

A.cpp C.ccp D.cpp B.cpp *

In IntelliJ, the history looks like this:

A.cpp B.cpp * C.cpp D.cpp

Is there a way to reproduce the behavior of the IntelliJ history in QtCreator? If not: Would this second history mode be a feature of common interest to QtCreator?

Enter image description here

Issue tracking – Can I track change history or status time for Sharepoint list items?

Can the change history of an item be recorded in SharePoint?

I have a list that is essentially a problem tracking list. The lead wants to know how many elements are in the workflow in certain states. You want data to see which states last the longest.

Sorry if this is a beginner's question. I'm new to SharePoint and this is my first SharePoint list. We use SharePoint Online.

Thank you for your help.


Why was I suspended from school after defending Hitler's legacy in my history lesson?

It is a difficult question, every discussion about Hitler must take into account its very difficult historical record. I doubt that a school would suspend a student because of different views. If your research is factual and well-founded, you must present your views with appropriate citations.

Mathematics History – Chronology of Hilbert Axioms and Non-Euclidean Geometry

Did mathematicians study non-Euclidean geometries before Hilbert axiomatization? Or do we need the rigor of Hilbert's axioms to have non-Euclidean geometry?

If non-Euclidean geometry preceded Hilbert planes, how do you define points and lines? Have we used Euclid's axioms / definitions? This seems doubtful, since the axioms of Euclid are rather weak (ie intersections of circles and lines) and alternative geometries are less intuitive.

History – Who came up with the AT & T syntax?

The assemblers supplied with most of the unices for the x86 and amd64 architectures use a peculiar syntax known as AT & T syntax. I have previously hypothesized how this came about and derived their syntactic quirks from trying to port the assembly language MACRO-11 to x86. However, there is little evidence of what actually happened. A discussion on the TUHS mailing list produced a SysV R3 port with this syntax, but little more.

So, who came up with this syntax?

Linux RedHat + time on machines change after some time configured despite the history service

We have machines in the cluster
One week ago we restart the chronicle service and check the time on all machines

After a chronic restart, time was fine on all machines

After 2 days we noticed that on some machines we have time differences of more than 1 hour

What we see is when we run the chronyd service we see from the output: Can't synchronise: no selectable sources

full details

 systemctl status chronyd
● chronyd.service - NTP client/server
   Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2019-11-01 19:12:36 UTC; 1 day 15h ago
  Process: 36664 ExecStartPost=/usr/libexec/chrony-helper update-daemon (code=exited, status=0/SUCCESS)
  Process: 36660 ExecStart=/usr/sbin/chronyd $OPTIONS (code=exited, status=0/SUCCESS)
 Main PID: 36663 (chronyd)
   CGroup: /system.slice/chronyd.service
           └─36663 /usr/sbin/chronyd

Nov 02 20:50:01 server_524, chronyd(36663): Forward time jump detected!
Nov 02 20:50:01 server_524, chronyd(36663): Can't synchronise: no selectable sources
Nov 02 20:53:14 server_524, chronyd(36663): Selected source
Nov 02 20:53:14 server_524, chronyd(36663): System clock wrong by -6895.552231 seconds, adjustment started
Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.

We also performed the following checks, as explained below

However, we have not identified the cause of the change in time
Any suggestion why that might be?

chronyc -n tracking ; date
Reference ID    : (
Stratum         : 7
Ref time (UTC)  : Sun Nov  3 09:23:51 2019
System time     : 2563.336425781 seconds fast of NTP time
Last offset     : +0.000040391 seconds
RMS offset      : 0.000760717 seconds
Frequency       : 30.168 ppm slow
Residual freq   : +0.016 ppm
Skew            : 0.907 ppm
Root delay      : 0.335443 seconds
Root dispersion : 0.427117 seconds
Update interval : 70.4 seconds
Leap status     : Normal
Sun Nov  3 10:07:29 UTC 2019

We compare the time with the time on the machine

date ; hwclock
Sun Nov  3 10:40:18 UTC 2019
Sun 03 Nov 2019 10:45:39 AM UTC  -0.907261 seconds

The configuration of chrony is:

more /etc/chrony.conf
# Use public servers from the project.
# Please consider joining the pool (
server   iburst

# Ignore stratum in source selection.
stratumweight 0

# Record the rate at which the system clock gains/losses time.
driftfile /var/lib/chrony/drift

# Enable kernel RTC synchronization.

# In first three updates step the system clock instead of slew
# if the adjustment is larger than 10 seconds.
makestep 10 3

# Allow NTP client access from local network.
#allow 192.168/16

# Listen for commands only on localhost.
bindcmdaddress ::1

# Serve time even if not synchronized to any NTP server.
#local stratum 10

keyfile /etc/chrony.keys

# Specify the key used as password for chronyc.
commandkey 1

# Generate command key if missing.

# Disable logging of client accesses.

# Send a message to syslog if a clock adjustment is larger than 0.5 seconds.
logchange 0.5

logdir /var/log/chrony
log measurements statistics tracking

more reason:


 chronyc -n sources
210 Number of sources = 1
MS Name/IP address         Stratum Poll Reach LastRx Last sample
^*                   6   6   377    15  +6522ns(  +94us) +/-  603ms


          Local time: Sun 2019-11-03 11:01:13 UTC

 Universal time: Sun 2019-11-03 11:01:13 UTC
        RTC time: Sun 2019-11-03 11:08:26
       Time zone: Etc/UTC (UTC, +0000)
     NTP enabled: yes
NTP synchronized: no
 RTC in local TZ: yes
      DST active: n/a

Warning: The system is configured to read the RTC time in the local time zone.
         This mode can not be fully supported. It will create various problems
         with time zone changes and daylight saving time adjustments. The RTC
         time is never updated, it relies on external facilities to maintain it.
         If at all possible, use RTC in UTC by calling
         'timedatectl set-local-rtc 0'.


tail -10 measurements.log
2019-11-03 09:20:19     N  6 111 111 1111   6  6 0.00 -8.100e-05  1.460e-04  1.477e-06  3.353e-01  4.268e-01
2019-11-03 09:21:30     N  6 111 111 1111   6  6 0.00 -7.400e-05  1.660e-04  1.477e-06  3.353e-01  4.279e-01
2019-11-03 09:22:40     N  6 111 111 1111   6  6 0.00 -9.400e-05  1.530e-04  1.477e-06  3.353e-01  4.290e-01
2019-11-03 09:23:51     N  6 111 111 1111   6  6 0.00 -3.800e-05  1.810e-04  1.478e-06  3.353e-01  4.300e-01
2019-11-03 09:25:01     N  6 111 111 1111   6  6 0.00 -1.900e-05  2.210e-04  1.477e-06  3.353e-01  4.311e-01
2019-11-03 09:26:11     N  6 111 111 1111   6  6 0.00 -9.500e-05  1.540e-04  1.477e-06  3.353e-01  4.321e-01
2019-11-03 09:27:21     N  6 111 111 1111   6  6 0.00  2.880e-04  9.430e-04  1.480e-06  3.353e-01  4.332e-01
2019-11-03 09:28:33     N  6 111 111 1111   6  6 0.00 -1.420e-04  1.500e-04  1.477e-06  3.353e-01  4.342e-01
2019-11-03 09:29:43     N  6 111 111 1111   6  6 0.00 -9.400e-05  1.340e-04  1.479e-06  3.353e-01  4.353e-01
2019-11-03 09:30:53     N  6 111 111 1111   6  6 0.00 -1.330e-04  2.190e-04  1.479e-06  3.353e-01  4.364e-01


# tail -10 statistics.log
2019-11-03 09:25:01      5.007e-06  4.996e-06  5.989e-06  3.351e-08  3.524e-07 2.2e-02   5   0   5
2019-11-03 09:26:11      2.132e-05  8.896e-05  1.616e-05  4.535e-07  3.464e-06 1.3e+00   6   2   3
2019-11-03 09:27:21      4.463e-05  6.743e-06  4.529e-05  3.689e-07  2.964e-06 2.0e-02   5   0   4
2019-11-03 09:28:33      5.257e-05  1.377e-04  3.979e-05  9.986e-07  9.823e-06 2.3e-01   6   2   4
2019-11-03 09:29:43      4.778e-05  8.748e-05  3.340e-05  1.079e-06  8.638e-06 1.1e-02   5   1   3
   Date (UTC) Time     IP Address    Std dev'n Est offset  Offset sd  Diff freq   Est skew  Stress  Ns  Bs  Nr
2019-11-03 09:30:53      4.487e-05  1.285e-04  4.349e-05  1.598e-06  1.385e-05 6.8e-02   5   1   4
2019-11-03 09:32:03      3.720e-05  8.503e-05  3.075e-05  1.381e-06  2.748e-06 8.3e-03   5   0   5


# tail -10 tracking.log
2019-11-03 09:25:01      7    -30.136      0.386  4.996e-06 N  1  5.989e-06 -2.562e+03
2019-11-03 09:26:11      7    -30.119      0.581  8.896e-05 N  1  1.616e-05 -2.556e+03
2019-11-03 09:27:21      7    -30.081      0.940  6.743e-06 N  1  4.529e-05 -2.550e+03
2019-11-03 09:28:33      7    -30.055      1.338  1.377e-04 N  1  3.979e-05 -2.544e+03
2019-11-03 09:29:43      7    -29.982      2.099  8.748e-05 N  1  3.340e-05 -2.539e+03
   Date (UTC) Time     IP Address   St   Freq ppm   Skew ppm     Offset L Co  Offset sd Rem. corr.
2019-11-03 09:30:53      7    -29.879      3.249  1.285e-04 N  1  4.349e-05 -2.533e+03
2019-11-03 09:32:03      7    -28.764      3.389  8.503e-05 N  1  3.075e-05 -2.527e+03


netstat -plaunt | egrep "chronyd"
udp        0      0 *                           36663/chronyd
udp6       0      0 ::1:323                 :::*                                36663/chronyd

Data Recovery – Accidentally deleted large block of text from a Word document stored in OneDrive. Why can not I restore it from the version history?

I have been working on a document in Word for several weeks. I saved it in OneDrive and edited it in Word Online, MacOS, and Android clients. I have processed it several times a day, every day.

Today (Saturday the 2nd of November), I accidentally deleted a large block of text (which I wrote yesterday) before I closed the document. When I came back to that and noticed my mistake, I thought, "No big deal, I can just restore it from the version history."

However, in the version history, I see that the last "version" came from Wednesday before this text was written.
Enter image description here

I get the same versions when I go to OneDrive in the web browser.

I checked my Android devices. One had a version of before the desired text was written. Another had a version of after the text was deleted.

The changes on Thursday, Friday, and yesterday were mainly made in the native macOS client with Auto Save enabled (because the document is stored in OneDrive), and the computer was constantly connected to the Internet.

Is it normal for Word not to store a version history for several days? Can I restore my missing text?