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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Linux’ Category

ls colour codes on OpenSuSE tumbleweed when accessed from Mac OS X ssh

Posted by jpluimers on 2019/06/07

`ls` colour codes

`ls` colour codes

I got confused as I thought red text would mean an error.

But they’re not: greenish yellow on a read background means error (a symbolic link to a place that’s no longer there).

It’s the output of as the one at

Actually the script is here as the one at [WayBackcommand line – What do the different colors mean in the terminal? – Ask Ubuntu failed with errors like this one:

-bash: *.xbm: bad substitution

The full script output is below.

Since various terminals have a different mapping from colours in the ANSI escape code colour table, I used the standard HTML colours using (which slightly differs from the screenshot on the right):


Note that the shell on Mac OS X uses a different way of configuring colours CLICOLOR as described in [WayBacksettings – CLICOLOR and LS_COLORS in bash – Unix & Linux Stack Exchange. I might cover that another day.

Script output:

Read the rest of this entry »

Posted in *nix, *nix-tools, bash, CSS, Development, HTML, HTML5, Linux, openSuSE, Power User, Software Development, SuSE Linux, Tumbleweed, Web Development | Leave a Comment »

When your btrfs partition is damaged.

Posted by jpluimers on 2019/05/27

A while ago, I somehow had a damaged btrfs partition that I found out after the virtualisation host without reason decided to reboot.

I’m not sure what caused that (by now the machine has been retired as it was already getting a bit old), but btrfs was panicking shortly after boot, so the VM as is was unusable.

In the end I had to:

  1. Boot from a Tumbleweed Rescue DVD (download Rescue CD – x86_64 from [WayBackopenSUSE:Tumbleweed installation – openSUSE)
  2. Add a fresh backup hard disk in read-write mote
  3. Mount the old one in read-only mode
  4. rsync -avloz over as much as I could
  5. Restore the VM from a backup
  6. Attach the backup hard disk
  7. Diff what I missed (only a few bits in the /etc tree and my home directory for which I hadn’t yet pushed the git repositories).

These didn’t work, but might work for others: [WayBackSDB:BTRFS – openSUSE – How to repair a broken/unmountable btrfs filesystem


Posted in *nix, btrfs, File-Systems, Linux, openSuSE, Power User, SuSE Linux, Tumbleweed | Leave a Comment »

systemd – How to clear journalctl – Unix & Linux Stack Exchange

Posted by jpluimers on 2019/05/24

Some tips on pruning entries from the systemd journal:

For stock opensuse, this is also relevant, as it seems to allow indefinite growth: [WayBack] systemd – journald Settings likey need your attention

You can view disk usage with this command:

journalctl --disk-usage


Posted in *nix, Linux, Power User, systemd | Leave a Comment »

Reset Linux Desktop To Default Settings With A Single Command – OSTechNix

Posted by jpluimers on 2019/05/16

To reset Ubuntu Unity or any other Linux desktop with GNOME/MATE DEs to its default settings, run:

dconf reset -f /

Source: [WayBack] Reset Linux Desktop To Default Settings With A Single Command – OSTechNix

I need to check if it works on OpenSuSE with XFCE as there the dconf command is installed, but I still have a default desktop (mainly because most of the work I do is using a terminal over ssh).


via: [] Never thought about dconf reset… Joe C. Hecht – Google+

Posted in *nix, *nix-tools, Linux, Power User, X11 | Leave a Comment »

command line – How to access a usb flash drive from the terminal? – Ask Ubuntu

Posted by jpluimers on 2019/05/13

Based on [WayBackcommand line – How to access a usb flash drive from the terminal? – Ask Ubuntu

Figure out the device:

  • lsblk
  • sudo blkid
  • sudo fdisk -l

Mount the device (assuming it is /dev/sdb1):

  • sudo mount /dev/sdb1 /media/usb
  • pmount /dev/sdb1
  • udisksctl mount -b /dev/sdb1

Unmounting and eject is in [WayBack] Linux (Ubuntu): safely remove USB flash disk via command line – Stack Overflow


Posted in *nix, *nix-tools, Linux, Power User | Leave a Comment »

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