Blog Posts

A collection of our blog posts over several years. We hope you might find them useful. Feedback is always welcome.

• How to create a requirements.txt file of your python project? (September 16, 2024)
• What process is behind a network port? (June 20, 2024)
• FOSS Backstage 2024 - Why is there no new release? (March 13, 2024)
• How to remove obsolete disk device on RHEL (August 30, 2023)
• scp or rsync login failure due to echo in .bashrc (December 02, 2022)
• How to renew an expired key of Ubuntu repository (May 20, 2022)
• How to remotely display X11 application on an Ubuntu 20 desktop (June 24, 2021)
• Relax-and-Recover (ReaR) image as container image (May 05, 2021)
• OTA Open Source Support Program (January 04, 2021)
• Publish docs via GitHub Pages fails with 'TypeError- expected str, bytes or os.PathLike object, not NoneType' (November 28, 2020)
• How to modify the eject into delete key on the apple magic keyboard (October 08, 2020)
• Using mkdocs with GitHub pages (pitfalls) (August 14, 2020)
• Raspberry Pi 4 cluster Series part 1 (July 01, 2020)
• When is it 72 hours later? (June 09, 2020)
• Configure ReaR on Ubuntu 18.04 with NETFS (April 01, 2020)
• How to test port 443 with the help of openssl (March 24, 2020)
• How to revert git commits (September 11, 2019)
• Preventing adding chef client configuration with knife command (May 22, 2019)
• What did you InSpec? (February 11, 2019)
• Mounting an ext3 file system fails with bad superblock error (January 14, 2019)
• Change the UUID on a xfs file system (January 09, 2019)
• Relax-and-Recover make backup to USB device (October 10, 2018)
• Create a Vagrant Box (of SLES11 SP4) (March 27, 2018)
• List all versions of a package (December 28, 2017)
• Procedure to sign your own RPMs (October 25, 2017)
• vagrant/ansible - Unexpected Exception ascii (April 27, 2017)
• Relax-and-Recover Automated Testing at Open Source Forum (CeBIT 2017) (March 28, 2017)
• List all installed packages from a given YUM repo on Linux (January 25, 2017)
• Raspberry Pi timecapsule with Pidora Linux (January 18, 2017)
• ReaR make validate rule in the Makefile (January 04, 2017)
• Rear diskrestore script (June 08, 2016)
• SANmigration (May 11, 2016)
• Internal disk was recognized as a multipath device (November 18, 2015)
• Procedure to keep your forked repo in sync with the upstream (November 16, 2015)
• UEFI ISO boot with ebiso (October 27, 2015)
• Convert cluster-wide disks to persistent disks on HP-UX 11.31 (October 12, 2015)
• Fix the OpenSSL Logjam issue on UNIX systems (September 11, 2015)
• Rear using duply as backup method (September 02, 2015)
• Testing the ACL limits on Unix file systems (August 13, 2015)
• Using systemd-nspawn to test rear rescue image (May 15, 2015)
• Creating a yum repository (kind of patch bundle) (January 13, 2015)
• What to do when no events arrive at the HP SIM console (October 15, 2014)
• How to convert epoch time to UNIX time format (May 19, 2014)
• How to fix git HEAD detached from a branch (May 07, 2014)
• Using sgesap_validation(_wrapper) scripts (April 03, 2014)
• Setting up duply (February 25, 2014)
• Generating GnuPG cryptographic keys (February 14, 2014)
• Mounting an ISO image on HP-UX 11.31 (February 12, 2014)
• When lazy umount is not enough? (January 31, 2014)
• How to get rid of WRITE SAME failed? (October 16, 2013)
• What to do when mount does not work on HP-UX? (September 20, 2013)
• NETFS compression tests (September 16, 2013)
• Adding missing fedora release branch to build environment (July 17, 2013)
• Recursive grep on Linux and HP-UX (or any kind of Unix) (May 03, 2013)
• Howto build an executable from a source rpm (September 01, 2008)
• Howto build a rpm package without root privileges (July 01, 2008)
• Creating and/or applying source patches on Linux (May 03, 2008)
• Creating a shell if structure in Makefile (February 13, 2008)