Core-Dumps on Ubuntu

Ubuntu by default pipes core dumps to apport (via /proc/sys/kernel/core_pattern). The core dumps are then stored in /var/lib/apport/coredump. If you want “normal” core dumps, you need to write a different pattern (e.g. “core.%p”) into core_pattern. Also useful to know: To install debug syms you need to add deb http://ddebs.ubuntu.com jammy main restricted universe multiverse deb http://ddebs.ubuntu.com jammy-updates main restricted universe multiverse deb http://ddebs.ubuntu.com jammy-proposed main restricted universe multiverse to sources.list.d

Ubuntu 22 with ZFS

Ubuntu update inconsistency

23 updates can be applied immediately. 18 of these updates are standard security updates. To see these additional updates run: apt list --upgradable apt list --upgradable Listing... Done ca-certificates/focal-updates,focal-updates,focal-security,focal-security 20210119~20.04.2 all [upgradable from: 20210119~20.04.1] curl/focal-updates,focal-security 7.68.0-1ubuntu2.7 amd64 [upgradable from: 7.68.0-1ubuntu2.6] libcurl3-gnutls/focal-updates,focal-security 7.68.0-1ubuntu2.7 amd64 [upgradable from: 7.68.0-1ubuntu2.6] libcurl4/focal-updates,focal-security 7.68.0-1ubuntu2.7 amd64 [upgradable from: 7.68.0-1ubuntu2.6] libgcrypt20/focal-updates,focal-security 1.8.5-5ubuntu1.1 amd64 [upgradable from: 1.8.5-5ubuntu1] libprocps8/focal-updates 2:3.3.16-1ubuntu2.3 amd64 [upgradable from: 2:3.3.16-1ubuntu2.2] libtiff5/focal-updates,focal-security 4.1.0+git191117-2ubuntu0.20.04.2 amd64 [upgradable from: 4.1.0+git191117-2ubuntu0.20.04.1] libudisks2-0/focal-updates 2.

Ubuntu Snap Tutorial

Create your first snap

Partition sizes

A freshly installed minimal Debian 13 system (no extra /boot): hjp@trixie:~$ df -h -text4 Filesystem Size Used Avail Use% Mounted on /dev/mapper/vgroot-root 919M 128M 728M 15% / /dev/mapper/vgroot-usr 2.7G 761M 1.8G 30% /usr /dev/mapper/vgroot-home 1.8G 532K 1.7G 1% /home /dev/mapper/vgroot-var 1.8G 292M 1.5G 17% /var hjp@trixie:~$ df -hi -text4 Filesystem Inodes IUsed IFree IUse% Mounted on /dev/mapper/vgroot-root 60K 1.6K 58K 3% / /dev/mapper/vgroot-usr 179K 36K 144K 20% /usr /dev/mapper/vgroot-home 120K 20 120K 1% /home /dev/mapper/vgroot-var 120K 2.

Datamash

The datamash program performs calculation (e.g. sum,, count, min, max, skewness, standard deviation) on input files.

Contextfree

contextfree Produziert Graphiken aus einer kontextfreien Grammatik.