Linux

Get BIOS Information

$ dmidecode -t bios -q

CPU Cores

Note that cpu0 cannot be offlined because may be of interrupts.

Disable

$ echo 0 > /sys/devices/system/cpu/cpu1/online

Online

$ echo 1 > /sys/devices/system/cpu/cpu1/online

Show interface details

ip a show <interface>

Run GUI application as root

sudo -E <command>

ref: Running GUI applications as root

Memory usage by process

alias memrss 'ps -eo comm,pmem,rss,etime --sort -rss | numfmt --header --from-unit=1024 --to=iec --field 3 | column -t | head -n20'

Checking mounts

$ cat /proc/mounts

/dev/nvme0n1p2 / btrfs rw,noatime,compress=zstd:3,ssd,discard=async,space_cache=v2,subvolid=265,subvol=/@ 0 0

/dev/nvme1n1p1 /birb btrfs rw,relatime,compress=zstd:3,ssd,discard=async,space_cache=v2,subvolid=5,subvol=/ 0 0

/dev/nvme0n1p3 /home btrfs rw,noatime,compress=zstd:3,ssd,discard=async,space_cache=v2,subvolid=256,subvol=/@home 0 0

/dev/nvme0n1p1 /boot/efi vfat rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro 0 0