Paweł Szaga home page
To resize partition and XFS file system under Linux OS after physical/virtual disk resize: #check current storage layout lsblk #resize "1" partition on /dev/vda disk device growpart /dev/vda 1 #resize XFS file system xfs_growfs /dev/vda1
Check CPU Vulnerabilities under Linux cat /sys/devices/system/cpu/vulnerabilities/spectre_v2 cat /sys/devices/system/cpu/vulnerabilities/l1tf cat /sys/devices/system/cpu/vulnerabilities/spec_store_bypass cat /sys/devices/system/cpu/vulnerabilities/spectre_v1 cat /sys/devices/system/cpu/vulnerabilities/meltdown
Analyze boot time: systemd-analyze Find long booting services: systemd-analyze blame Plot SVG chart of boot process timeline: systemd-analyze plot > tmp.svg Critical chain: systemd-analyze critical-chain Analyze logs from particular service i.e. networking.service journalctl -xe -u networking.service
How to check graphical session type (Wayland or Xorg) on Fedora system. At first, use following command to get current session ID: loginctl Next, use bellow command to check graphical session type: loginctl show-session ID -p Type where ID is session ID from previous command output. Example (where session ID = 1): $ loginctl … Continue reading Fedora - checking graphical session type (Wayland or Xorg)
Load new Linux kernel with kexec - method faster than reboot. Just run below script using sudo or as a root. Script is also available at: https://github.com/openterprise/scripts/blob/master/kexec.sh #!/bin/bash latestkernel=`ls -t /boot/vmlinuz-* | sed "s/\/boot\/vmlinuz-//g" | head -n1` echo "kernel current: $(uname -r)" echo "kernel target: ${latestkernel}" echo "" echo "Arming kexec..." #kexec -l /boot/vmlinuz-${latestkernel} --initrd=/boot/initramfs-${latestkernel}.img… Continue reading Linux - load new kernel with kexec - faster than reboot