Linux on JOURNAL.ROBBI.MY

Cawbird - Linux Twitter Client

Sun, 05 Sep 2021 22:24:38 +0800

Peace be upon you and hello everyone!

Have you heard Corebird before? It a twitter client for linux desktop user but the project (and others 3rd party twitter client) stopped when Twitter decide to remove “UserStream API”.

Twitter actually replace that API with new ones called “Accounts Activity API”, but the Corebird developer stated it too difficult to implement and he may not have much time for development anymore. So the project was discontinue since 2018 and honestly, Corebird are the best GUI twitter client for linux.

openSUSE Virtual Conf. 21 t-shirt (FREE!)

Tue, 15 Jun 2021 00:00:00 +0000

I just checked my email and I got email from ddemaio <ddemaio@suse.de> that said welcome to this year’s openSUSE Conference. S/he give me token access and said that I can claim free t-shirt. Nice!

Fedora - koji kernel regression testing

Thu, 31 Dec 2020 08:45:00 +0000

I will show how to get latest kernel from Koji for testing purpose. For your infomation, Koji build packages take times to appear on updates-testing repository.

The faster way to get latest kernel the is manually download from Koji. As example here, on this blog post I will show how I will load kernel kernel-5.10.4-200 to my Fedora 33 Workstation.

Firstly check the latest success build kernel here

For example, I will use this build

Setup SSH login without password (windows)

Thu, 10 Dec 2020 19:11:00 +0000

bash

# Currently on Windows with MingGW64 terminal
$ uname -a
MINGW64_NT-10.0-18363 AYAM-ITEK-KAMBING 3.1.6-340.x86_64 2020-07-09 14:33 UTC x86_64 Msys

# we must make sure the permissions to files and folders are correct
$ chmod 600 ~/.ssh/authorized_keys 
$ chmod 700 ~/.ssh/

# copy the public key contents from LOCAL MACHINE to REMOTE MACHINE
$ ssh-copy-id -i ~/.ssh/id_rsa.pub robbi@172.217.24.174 -p2222
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "~/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys

Number of key(s) added: 1

Now try logging into the machine, with: "ssh -p '2222' 'robbi@172.217.24.174'"
and check to make sure that only the key(s) you wanted were added.

# try to ssh into remote machine
$ ssh robbi@172.217.24.174 -p 2222
Last login: Fri Dec 11 03:02:27 2020 from 10.0.2.2

[robbi@r0x ~]$ uname -a
Linux r0x 5.9.11-200.fc33.x86_64 #1 SMP Tue Nov 24 18:18:01 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
[robbi@r0x ~]$ cat /etc/fedora-release
Fedora release 33 (Thirty Three)

How to disable ICMP ping replies (linux)

Tue, 08 Dec 2020 01:42:00 +0000

Few weeks ago during server setup phase for one of my project, I notice there is no ICMP or ping replies from server and some port are not able to access.

I told the network engineer to check and seem they blocking the ports and disabling ICMP replies from their firewall configuration.

From that accident I do some google-fu if I can do same thing for personal computer / server. We can setting the kernel variable or use iptable to disable ICMP / ping replies if requested.

Use this - RSS Guard [Windows / Linux/ Mac]

Thu, 03 Dec 2020 00:00:00 +0000

Do you like reading blog or website for information, review, tweak and update? Then how you do it? Let me guess, you use web browser, type the url or click the bookmark and enjoy the articles?

I also like to read like you do but I don’t like randomly visit the web url, save a lot of bookmark and open so many tabs on my browser, as alternative I use aggregator to collect and notify me if the web url have new article published on they website.

Sending JSON data file using CURL to API endpoint

Mon, 30 Nov 2020 10:23:00 +0000

I developed warehouse system and use restful as communication method between our software and client software. We let end point of our system to talk each other with API designed.

For simple and small test using Postman or SOAP-UI is enough for me but to when to test this system with massive data via API is quite headache, plus the mock features on Postman limited and not “mocking” enough as I want.

Gnome Asia summit 2020

Mon, 23 Nov 2020 16:04:00 +0000

I think it maybe too late to help out telling anyone about this event ~~since registeration already closed~~ but look like the registeration still open. Anyway, let see the schedule:

Some of the segment that offer good topic and caught my eyes :

The Use and Benefits of Open Source Software in Tour & Travel Company - Rahman Nur
Building a career in open source : Lessons and Learnings - Umang Jain
Under COVID-19 pandemic, Korea’s Community Challenges and Futures - DaeHyun Sung
Leveraging Open Source Tools for Distance Learning During Pandemic Season - Mohammad Hafiz Ismail

Gnome Asia summit 2020 will start by ~~tomorrow~~ today and conference will be online. This event was sponsor by Gitlab and openSUSE.

Posix - Speed up "find" + "exec" command (recursive)

Sun, 08 Nov 2020 11:19:00 +0000

I learn some trick today on how to speed up find, exec command. Let check this out:

gist · RobbiNespu View on GitHub ↗

# let see how many files we have
$ find . -type f | wc -l
36367

# lets check every file status
$ time find . -type f -exec stat {} \; > /dev/null
real 0m40.107s
user 0m14.381s
sys 0m26.410s

# lets check every file status
$ time find . -type f -exec stat {} + > /dev/null
real 0m1.281s
user 0m0.626s
sys 0m0.656s

Wow that’s quite a huge difference! Impressive! All we did was swap the \; for a +.

Keybase, GPG key and Zoom

Sun, 25 Oct 2020 03:09:00 +0000

I have been using Keybase since 2016 until now and start using PGP since 2009.

Back then before Keybase available, I already use PGP as I mentioned earlier but I having hard with PGP keys because each time I upgrade OS, reformat OS, unrecoverable computer failure or switch newer computer I lost my PGP keys. Some of them don’t have expire date and I lost revoke key to take it down, unfortunately.

Fedora - KDE development journey (Qt5X11Extras)

Sat, 10 Oct 2020 13:10:00 +0000

I tried to build kwindowsystem but seem I am missing some package dependencies:

bash

rnm@b0x (~/kde/src/kdesrc-build)
$ kdesrc-build kwindowsystem
Updating sysadmin-repo-metadata (to branch master)
 Stashing local changes if any...

Building extra-cmake-modules from frameworks (1/2)
 Updating extra-cmake-modules (to branch master)
 Stashing local changes if any...
 No changes to extra-cmake-modules source, proceeding to build.
 Compiling... succeeded (after 0 seconds)
 Installing.. succeeded (after 0 seconds)

Building kwindowsystem from frameworks (2/2)
 No source update, but the last configure failed
 Updating kwindowsystem (to branch master)
 Stashing local changes if any...
 Source update complete for kwindowsystem: no files affected
 Preparing build system for kwindowsystem.
 Removing files in build directory for kwindowsystem
 Old build system cleaned, starting new build system.
 Running cmake targeting Unix Makefiles...
 Unable to configure kwindowsystem with CMake!
 Unable to configure kwindowsystem with KDE

<<< PACKAGES SUCCESSFULLY BUILT >>>
extra-cmake-modules
 
Removing 1 out of 3 old log directories...

<<< PACKAGES FAILED TO BUILD >>>
kwindowsystem - ~/kde/src/log/2020-10-10-01/kwindowsystem/cmake.log

Important notification for kwindowsystem:
 kwindowsystem has failed to build 5 times.
 You can check https://build.kde.org/search/?q=kwindowsystem to see if this is expected.

:-(
Your logs are saved in file:///home/rnm/kde/src/log/2020-10-10-01

rnm@b0x (~/kde/src/kdesrc-build)
$ cat ~/kde/src/log/2020-10-10-01/kwindowsystem/cmake.log
# kdesrc-build running: 'cmake' '/home/rnm/kde/src/kwindowsystem' '-G' 'Unix Makefiles' '-DCMAKE_BUILD_TYPE=RelWithDebInfo' '-DBUILD_TESTING=TRUE' '-DCMAKE_CXX_FLAGS:STRING=-pipe' '-DCMAKE_INSTALL_PREFIX=/home/rnm/kde/usr'
# from directory: /home/rnm/kde/build/kwindowsystem
-- The C compiler identification is GNU 10.2.1
-- The CXX compiler identification is GNU 10.2.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- 

Installing in /home/rnm/kde/usr. Run /home/rnm/kde/build/kwindowsystem/prefix.sh to set the environment for KWindowSystem.
-- Looking for __GLIBC__
-- Looking for __GLIBC__ - found
-- Performing Test _OFFT_IS_64BIT
-- Performing Test _OFFT_IS_64BIT - Success
-- Performing Test HAVE_DATE_TIME
-- Performing Test HAVE_DATE_TIME - Success
-- Found X11: /usr/include 
-- Looking for XOpenDisplay in /usr/lib64/libX11.so
-- Looking for XOpenDisplay in /usr/lib64/libX11.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- Found PkgConfig: /usr/bin/pkg-config (found version "1.7.3") 
-- Found XCB_XCB: /usr/lib64/libxcb.so (found version "1.13.1") 
-- Found XCB_KEYSYMS: /usr/lib64/libxcb-keysyms.so (found version "0.4.0") 
-- Found XCB_RES: /usr/lib64/libxcb-res.so (found version "1.13.1") 
-- Found XCB: /usr/lib64/libxcb.so;/usr/lib64/libxcb-keysyms.so;/usr/lib64/libxcb-res.so (found version "1.13.1") found components: XCB KEYSYMS RES 
CMake Error at /usr/lib64/cmake/Qt5/Qt5Config.cmake:28 (find_package):
 Could not find a package configuration file provided by "Qt5X11Extras" with
 any of the following names:

 Qt5X11ExtrasConfig.cmake
 qt5x11extras-config.cmake

 Add the installation prefix of "Qt5X11Extras" to CMAKE_PREFIX_PATH or set
 "Qt5X11Extras_DIR" to a directory containing one of the above files. If
 "Qt5X11Extras" provides a separate development package or SDK, be sure it
 has been installed.
Call Stack (most recent call first):
 CMakeLists.txt:69 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/rnm/kde/build/kwindowsystem/CMakeFiles/CMakeOutput.log".

After awhile, I found the solution, I actually just need to install qt5-qtx11extras-devel package from Fedora to allow cmake found the dependencies needed and everything is working fine now.

Fedora - KDE development journey (Qt5UiPlugin)

Fri, 09 Oct 2020 21:58:34 +0800

I getting compiler error when trying to build kwidgetsaddons. The error log said:

bash

# kdesrc-build running: 'cmake' '/home/rnm/kde/src/kwidgetsaddons' '-G' 'Unix Makefiles' '-DCMAKE_BUILD_TYPE=RelWithDebInfo' '-DBUILD_TESTING=TRUE' '-DCMAKE_CXX_FLAGS:STRING=-pipe' '-DCMAKE_INSTALL_PREFIX=/home/rnm/kde/usr'
# from directory: /home/rnm/kde/build/kwidgetsaddons
-- The C compiler identification is GNU 10.2.1
-- The CXX compiler identification is GNU 10.2.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- 

Installing in /home/rnm/kde/usr. Run /home/rnm/kde/build/kwidgetsaddons/prefix.sh to set the environment for KWidgetsAddons.
-- Looking for __GLIBC__
-- Looking for __GLIBC__ - found
-- Performing Test _OFFT_IS_64BIT
-- Performing Test _OFFT_IS_64BIT - Success
-- Performing Test HAVE_DATE_TIME
-- Performing Test HAVE_DATE_TIME - Success
-- Performing Test COMPILER_HAS_HIDDEN_VISIBILITY
-- Performing Test COMPILER_HAS_HIDDEN_VISIBILITY - Success
-- Performing Test COMPILER_HAS_HIDDEN_INLINE_VISIBILITY
-- Performing Test COMPILER_HAS_HIDDEN_INLINE_VISIBILITY - Success
-- Performing Test COMPILER_HAS_DEPRECATED_ATTR
-- Performing Test COMPILER_HAS_DEPRECATED_ATTR - Success
-- At least one python version must be available to use PythonModuleGeneration.
-- The following features have been enabled:

 * DESIGNERPLUGIN, Build plugin for Qt Designer

-- The following REQUIRED packages have been found:

 * ECM (required version >= 5.75.0), Extra CMake Modules., <https://commits.kde.org/extra-cmake-modules>
 * Qt5Gui (required version >= 5.15.1)
 * Qt5Widgets
 * Qt5Test
 * Qt5 (required version >= 5.12.0)

-- The following features have been disabled:

 * QCH, API documentation in QCH format (for e.g. Qt Assistant, Qt Creator & KDevelop)

-- The following OPTIONAL packages have not been found:

 * PythonModuleGeneration

-- The following REQUIRED packages have not been found:

 * Qt5UiPlugin
 Required to build Qt Designer plugins

CMake Error at /usr/share/cmake/Modules/FeatureSummary.cmake:457 (message):
 feature_summary() Error: REQUIRED package(s) are missing, aborting CMake
 run.
Call Stack (most recent call first):
 CMakeLists.txt:89 (feature_summary)


-- Configuring incomplete, errors occurred!
See also "/home/rnm/kde/build/kwidgetsaddons/CMakeFiles/CMakeOutput.log".

It said we need qt5-qttools-devel package and their dependencies to be installed.

Fedora rawhide + everything : bare-bones minimal KDE

Mon, 05 Oct 2020 01:12:00 +0000

The goal of this articles is how to get a bare-bones KDE desktop from Fedora rawhide everything installer. I’d welcome any suggestions and comments to improve it.

Let me remind before we proceed, Fedora rawhide is pre-release / testing / master / current development / rolling version of Fedora. Please read here for more details. If you are novice and not advance user, please don’t follow this tutorial, it not stable and “new unreport wild bugs” may appears and you will have problem to troubleshoot.

Fedora - KDE development journey (Qt5Qml / qmake)

Mon, 05 Oct 2020 05:12:00 +0800

Qt5Qml qt5-qtdeclarative-devel

I getting compiler error when trying to build ki18n

The error log said:

bash

$ cat ~/kde/src/log/2020-10-05-02/ki18n/cmake.log 
# kdesrc-build running: 'cmake' '/home/rnm/kde/src/ki18n' '-G' 'Unix Makefiles' '-DCMAKE_BUILD_TYPE=RelWithDebInfo' '-DBUILD_TESTING=TRUE' '-DCMAKE_CXX_FLAGS:STRING=-pipe' '-DCMAKE_INSTALL_PREFIX=/home/rnm/kde/usr'
# from directory: /home/rnm/kde/build/ki18n
-- The C compiler identification is GNU 10.2.1
-- The CXX compiler identification is GNU 10.2.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- 

Installing in /home/rnm/kde/usr. Run /home/rnm/kde/build/ki18n/prefix.sh to set the environment for KI18n.
-- Looking for __GLIBC__
-- Looking for __GLIBC__ - found
-- Performing Test _OFFT_IS_64BIT
-- Performing Test _OFFT_IS_64BIT - Success
-- Performing Test HAVE_DATE_TIME
-- Performing Test HAVE_DATE_TIME - Success
CMake Error at CMakeLists.txt:42 (find_package):
 Could not find a package configuration file provided by "Qt5Qml" (requested
 version 5.12.0) with any of the following names:

 Qt5QmlConfig.cmake
 qt5qml-config.cmake

 Add the installation prefix of "Qt5Qml" to CMAKE_PREFIX_PATH or set
 "Qt5Qml_DIR" to a directory containing one of the above files. If "Qt5Qml"
 provides a separate development package or SDK, be sure it has been
 installed.

-- Configuring incomplete, errors occurred!

Where the heck is “Qt5Qml” ? I try my luck and I am right, the package from repository that I need to be install are qt5-qtdeclarative-devel

Upgrade Suse Linux Enterprise Server 11 SP1 to SP4

Sun, 27 Sep 2020 03:26:00 +0000

As I mentioned previously, SLES11 is already absolute / not supported anymore. Even most official tutorial are wipe out form suse website.

I will write how I updating my SLES11 to SP4. I don’t have SP1 but it should be work the same as SP2 upgrade to SP3 and SP3 to SP4.

So this is my machine

bash

VM-b0x:convey69:/convey69> uname -a
Linux VM-b0x 3.0.42-0.7-default #1 SMP Tue Oct 9 11:58:45 UTC 2012 (a8dc443) x86_64 x86_64 x86_64 GNU/Linux

VM-b0x:convey69:/convey69> cat /etc/SuSE-release
SUSE Linux Enterprise Server 11 (x86_64)
VERSION = 11
PATCHLEVEL = 2

why update? Because it better to get recent patch, fix OS vulnerabilities and update kernel (anything as latest we could get! So please do not ask me why need update)

SLES 11 - set DNS manually

Fri, 25 Sep 2020 07:37:00 +0000

Hell yeah, I know SLES11 is absolute / not supported anymore. The latest version are SLES11 SP4, but I still using it on my test Refreshing service ’nu_novell_com’.server. Hmm.. sometimes I forgot how to configure DNS on Suse Linux Enteprise Server (SLES) 11 then I believe puts public notes on my weblog will be great for everyone reference!

back to the topic, setup dns is easier to just overwrite generated file /etc/resolv.conf directly

Use this - My favorite tools

Thu, 30 Jul 2020 15:54:23 +0800

Assalamualaikum and hello everyone,

I plan to create some blog post section called Use This. Yeah, I gonna post about what software, tools, script that I use. It just my own personal preferences of choices and I just recommend what I am use.

Maybe this kind of blog post will be useful and I also can jot down my settings and tweaks for everyone and my future references.

It will be cross platform, so Windows and Linux will be listed together. No worries. I will covers opensource, free and commercial software. Each post will hold only just one tools. Not just like regular “use this” interview that put all they favourite into one posts.

mambang.org.my - Oshirix operating system (linux)

Tue, 23 Jun 2020 11:25:00 +0800

Bismillahirrahmanirrahim,

Assalamualaikum wbt dan salam sejahtera kepada semua pembaca..

Ok kali ni aku nak cover-up sebuah portal dan produk yang dah hilang dari radar since 2014 (kalau tak silap) hingga kini. Penulisan ini adalah berdasarkan penglibatan aku secara tak langsung dan pengalaman bersama komuniti tersebut.

Komuniti “Mambang.org” atau “Mambang.org.my” atau lebih mudah disebut “Mambang” adalah sebuah komuniti opensource tempatan yang sangat berahsia binti misteri tapi mempunyai banyak khazanah dan produk yang bagus.

Setup python 3.6 enviroment with virtualenv

Tue, 23 Jul 2019 09:00:00 +0800

My wife ask me to convert few of PDF files to Excell spreadsheet. I did same thing last year by creating some small scripting program in python to do the conversion, but I don’t know where I put my code right now. Maybe lost during formating my laptop last year..haha 😜

I am 懒 right now (guess what I wrote in hànzì) and I don’t remember how I did last time. Hahaha.. With my Google-fu skill, I found out DfTables offer free API for converting document to another format. Nice! 😬