What do the various pieces of uname -a output mean? Following is an example output:
Linux mymachine 2.6.18-194.e15PAE #1 SMP Fri Apr 2 15:37:44 EDT 2010 i686 i686 i386 GNU/Linux
I gather that Linux is the O.S, 2.6.18-194.e15PAE is the kernel version. What do the rest of the pieces mean?
Appreciate your help.
In order, the fields are:
"Linux": The machine's kernel name (e.g, OS).
"mymachine": The machine's node name (e.g, hostname).
"2.6.18-194.e15PAE": The kernel version
"#1 SMP Fri Apr 2 15:37:44 EDT 2010": The kernel version and build time.
"i686 i686": The processor type and hardware platform.
"i386": The architecture of the processor. (This and the two above basically all mean the same thing on most systems. They typically only differ on certain embedded platforms.)
"GNU/Linux": The operating system name.
For comparison, the uname -a from my Mac reads:
"Darwin" (hardware name)
"mymachine"
"Darwin Kernel Version 11.0.0" (version)
"Sat Jun 18 12:56:35 PDT 2011; root:xnu-1699.22.73~1/RELEASE_X86_64" (build time)
"x86_64" (processor architecture)
(The operating system name is omitted by the OS X version of uname for some reason, as are a few other fields.)
Related
Using JavaFX 8 (bundled with Java 1.8)
Running this on a windows client, the refresh workaround does work.
(JavaFX TableColumns' headers not aligned with cells due to vertical scrollbar)
However on a Linux client - this fix does not work.
/opt/iecc/sv-app/lib$ uname -a
Linux inst03cli01.020-4 4.18.0-193.el8.x86_64 #1 SMP Fri Mar 27 14:35:58 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Any other workarounds I can try ?
I have to change some settings on a production (virtual) server where debian 4.9 is running and includes a big database. So i searched via google for a good solutions because i'm not so fit with unix-commands and there is no space for to do mistakes or shut down the system for a few days.
Settings:
Linux v22017033447646597 4.9.0-4-amd64 #1 SMP Debian 4.9.65-3+deb9u1 (2017-12-23) x86_64 GNU/Linux
PHP 7.2.27-1+0~20200123.34+debian9~1.gbp63c0bc (cli) (built: Jan 23 2020 14:14:52) ( NTS )
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.2.27-1+0~20200123.34+debian9~1.gbp63c0bc
Server version: 10.1.26-MariaDB-0+deb9u1 Debian 9.1
I'll glade for any sensefull response..
I notice (via byobu ls or "Move focus among sessions" Alt-Up/Down) that there are some sessions that begin with underscore and I am sure I have not named the sessions like that :) They look as if they are linked to other sessions that do no start with underscore, because if I add or remove windows from the linked session, the ones starting with underscore reflect the change.
I also notice in the byobu ls that sessions are part of something called "group".
So I'd like to ask:
what are the sessions that begin with underscore and if I can
avoid cycling through them
what is a group in byobu (in case it's related)
I have searched the man page and the help page for "group" or "underscore" but I couldn't find something. I also watched all of https://youtu.be/NawuGmcvKus but didn't see anything mentioned.
Example output:
ubuntu:~ $ byobu ls
apple: 1 windows (created Wed Jun 12 09:26:46 2019) [190x44] (group carrot)
banana: 2 windows (created Wed Jun 12 10:14:10 2019) [190x44]
_carrot-17655: 1 windows (created Wed Jun 12 09:29:55 2019) [190x43] (group carrot) (attached)
_egg-11803: 7 windows (created Wed Jun 12 09:19:28 2019) [190x44] (group egg)
fig: 7 windows (created Wed Jun 12 09:15:27 2019) [190x44] (group egg)
My environment:
ubuntu:~ $ byobu --version
byobu version 5.125
tmux 2.6
ubuntu:~ $ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
I'm running Docker on CentOS 7, from time to time there's the following message displayed:
Message from syslogd#dev-master at Mar 29 17:23:03 ...
kernel:unregister_netdevice: waiting for lo to become free. Usage count = 1
I've googled a lot, read a lot of resources found and tried many ways like keeping my system updated, upgrading kernel etc, but the message still keeps showing up, it's not too often but sooner or later I'll see it. Also I found issue for this problem on docker github is still open, then my questions are:
What does this message mean? Could somebody give me a simple explanation why docker causes it?
Is there any workaround for this?
If it could not be fixed yet(the issue is still open), will it affect the server or services running inside docker container? Will it be a serious performance issue because it also happens on our production servers?
Docker version:
Client:
Version: 1.11.1
API version: 1.23
Go version: go1.5.4
Git commit: 5604cbe
Built: Wed Apr 27 00:34:42 2016
OS/Arch: linux/amd64
Server:
Version: 1.11.1
API version: 1.23
Go version: go1.5.4
Git commit: 5604cbe
Built: Wed Apr 27 00:34:42 2016
OS/Arch: linux/amd64
OS info:
CentOS 7, with kernel version: 4.6.0-1.el7.elrepo.x86_64
I really appreciate for any info/tips or resources, thanks a lot.
Your best source of information is the issue you linked to docker#5618. This is a kernel bug, and has not yet been resolved. The issue is "triggered" by docker because starting/stopping containers also creates network interfaces for containers when they are created/destroyed.
Installed Quartus 13.0 with Modelsim in Fedora 22 64-bit. Running Quartus in 32-bit because I get lots and lots of problems otherwise. However, I can start Quartus, create a project, synthesize it, fire up the simulation window and configure the in signals. Then, when clicking the button for launching Modelsim, it starts doing it's job, but ends up with
ModelSim-Altera was not found. Please install ModelSim-Altera which is included with the Quartus II installer, or use the Quartus II Simulator instead by selecting "Simulation > Options > Quartus II Simulator"
This is simply not true. I can start Modelsim myself by running vsim. Here follows the full output. Any suggestions to resolve this will be +1 and no suggestions which would make sense will be punished by me.
Device family: Cyclone II
Running quartus eda_testbench
>> quartus_eda --gen_testbench --check_outputs=on --tool=modelsim_oem --format=verilog grindar -c grindar {--vector_source=/home/johan/Projects/Studies/vhdl/labs/lab1/and_grind.vwf} {--testbench_file=./simulation/qsim/grindar.vt}
PID = 20951
*******************************************************************
Running Quartus II 32-bit EDA Netlist Writer
Version 13.0.1 Build 232 06/12/2013 Service Pack 1 SJ Web Edition
Processing started: Sat Sep 12 20:31:33 2015
Command: quartus_eda --gen_testbench --check_outputs=on --tool=modelsim_oem --format=verilog grindar -c grindar --vector_source=/home/johan/Projects/Studies/vhdl/labs/lab1/and_grind.vwf --testbench_file=./simulation/qsim/grindar.vt
Selected device EP2C35F672C6 for design "grindar"
Generated Verilog Test Bench File ./simulation/qsim/grindar.vt for simulation
Quartus II 32-bit EDA Netlist Writer was successful. 0 errors, 0 warnings
Peak virtual memory: 318 megabytes
Processing ended: Sat Sep 12 20:31:34 2015
Elapsed time: 00:00:01
Total CPU time (on all processors): 00:00:01
Running quartus eda_func_netlist
>> quartus_eda --functional=on --simulation --tool=modelsim_oem --format=verilog grindar -c grindar
PID = 20953
*******************************************************************
Running Quartus II 32-bit EDA Netlist Writer
Version 13.0.1 Build 232 06/12/2013 Service Pack 1 SJ Web Edition
Processing started: Sat Sep 12 20:31:36 2015
Command: quartus_eda --functional=on --simulation=on --tool=modelsim_oem --format=verilog grindar -c grindar
Selected device EP2C35F672C6 for design "grindar"
Generated file grindar.vo in folder "/home/johan/Projects/Studies/vhdl/labs/lab1/simulation/modelsim/" for EDA simulation tool
Quartus II 32-bit EDA Netlist Writer was successful. 0 errors, 0 warnings
Peak virtual memory: 318 megabytes
Processing ended: Sat Sep 12 20:31:37 2015
Elapsed time: 00:00:01
Total CPU time (on all processors): 00:00:01
*******************************************************************
ModelSim-Altera was not found. Please install ModelSim-Altera which is included with the Quartus II installer, or use the Quartus II Simulator instead by selecting "Simulation > Options > Quartus II Simulator"
Please check if the path to the ModelSim binary is correctly specified under
Tools -> Options
I am in Windows, but hopefully the settings should be the same under Linux