Posted by jpluimers on 2019/06/07
`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 https://github.com/gkotian/gautam_linux/blob/master/scripts/colours.sh as the one at
Actually the script is here https://raw.githubusercontent.com/gkotian/gautam_linux/master/scripts/colours.sh as the one at [WayBack] command 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 Terminal.app screenshot on the right):
References:
Note that the shell on Mac OS X uses a different way of configuring colours CLICOLOR as described in [WayBack] settings – CLICOLOR and LS_COLORS in bash – Unix & Linux Stack Exchange. I might cover that another day.
Script output:
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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:
- Boot from a Tumbleweed Rescue DVD (download Rescue CD – x86_64 from [WayBack] openSUSE:Tumbleweed installation – openSUSE)
- Add a fresh backup hard disk in read-write mote
- Mount the old one in read-only mode
rsync -avloz over as much as I could- Restore the VM from a backup
- Attach the backup hard disk
- 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: [WayBack] SDB:BTRFS – openSUSE – How to repair a broken/unmountable btrfs filesystem
–jeroen
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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
–jeroen
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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).
–jeroen
via: [Archive.is] Never thought about dconf reset… Joe C. Hecht – Google+
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Posted by jpluimers on 2019/05/13
Based on [WayBack] command line – How to access a usb flash drive from the terminal? – Ask Ubuntu
Figure out the device:
lsblksudo blkidsudo fdisk -l
Mount the device (assuming it is /dev/sdb1):
sudo mount /dev/sdb1 /media/usbpmount /dev/sdb1udisksctl mount -b /dev/sdb1
Unmounting and eject is in [WayBack] Linux (Ubuntu): safely remove USB flash disk via command line – Stack Overflow
–jeroen
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