Connect iPhone to Fedora

> install ifuse libimobiledevice-utils usbmuxd -y
> usbmuxd -f -v
> idevicepair pair      (you need to accept on your phone to trust)
> ifuse /mnt

TADA :-)

 

https://www.dedoimedo.com/computers/linux-iphone-6s-ios-11.html

 

 

Use Intel pstate instead of acpi cpufreq driver

 GRUB_CMDLINE_LINUX_DEFAULT="intel_pstate=enable quiet splash"

https://www.kernel.org/doc/html/latest/admin-guide/pm/intel_pstate.html

Add dummy NIC as service

echo "MACADDR=56:12:b6:2a:aa:34" > /etc/sysconfig/dummy

vim /etc/systemd/system/dummy@.service 

# Remember to run `systemctl daemon-reload` after creating or editing this file.

[Unit]
Description=Dummy network interface for %i
After=network.target

[Service]
Type=oneshot
RemainAfterExit=yes
EnvironmentFile=/etc/sysconfig/%i-dummy
ExecStartPre=/sbin/ip link add %i-dummy address ${MACADDR} type dummy

[Install]
WantedBy=multi-user.target

systemctl daemon-reload
systemctl enable dummy@foo.service
systemctl start dummy@foo.service

source:  https://jamielinux.com/docs/libvirt-networking-handbook/appendix/dummy-interface-on-fedora.html

Rename files in bulk

 rename "s/plot$/pool/" *.plot

Fedora find all non-ascii characters in a file

grep -n -P "[^\x00-\x7F]" -R --include="*.py" chia/

chia/full_node/full_node.py:910:            f"⏲️  Finished signage point {request.index_from_challenge}/"
chia/full_node/full_node.py:970:            f"🌱 Updated peak to height {record.height}, weight {record.weight}, "
chia/full_node/full_node.py:1361:                f"🍀 ️Farmed unfinished_block {block_hash}, SP: {block.reward_chain_block.signage_point_index}, "
chia/full_node/full_node.py:1576:                    f"⏲️  Finished sub slot, SP {self.constants.NUM_SPS_SUB_SLOT}/{self.constants.NUM_SPS_SUB_SLOT}, "
chia/wallet/wallet_blockchain.py:261:                self.log.info(f"💰 Updated wallet peak to height {block_record.height}, weight {block_record.weight}, ")

Powersave profile

 yum install kernel-tools -y

cpupower frequency-info

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

cat /proc/cpuinfo | grep '^[c]pu MHz' |awk {'print $4'} |sort -r -u |head -n 5

cpupower frequency-set -g powersave

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

cat /proc/cpuinfo | grep '^[c]pu MHz' |awk {'print $4'} |sort -r -u |head -n 5

Ubuntu Migrating over from systemd-networkd to NetworkManager

https://www.configserverfirewall.com/ubuntu-linux/ubuntu-network-manager/

https://jbit.net/NetworkManager_Strictly_Unmanaged/

Want to delete all Thumbs.db recusively?

In a power shell run..

# to view

Get-ChildItem -Path . -Include Thumbs.db -Recurse -Name -Force

# to delete

Get-ChildItem -Path . -Include Thumbs.db -Recurse -Name -Force | Remove-Item -Force

Fedora 33 install latest kernel from koji

dnf install koji
koji list-builds --package=kernel --after="2021-03-01"
koji download-build --arch=x86_64 kernel-5.11.5-50.fc33
dnf update kernel-*.rpm

#source
#https://fedoraproject.org/wiki/Test_Day:2021-03-08_Kernel_5.11_Test_Week

Fedora 32 -> 33 Upgrade

dnf upgrade -y --refresh
dnf install -y dnf-plugin-system-upgrade
dnf system-upgrade download --releasever=33

dnf system-upgrade reboot

dnf system-upgrade clean
dnf clean packages

#source
#https://www.linuxjournal.com/content/how-upgrade-fedora-32-fedora-33-cli-graphical-methods

Same faster way to generate ramdom data and store into a file

openssl enc -aes-256-ctr -pass pass:"$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64)" -nosalt < /dev/zero > /tmp/randomfile.bin

#source, idea
#https://dev.to/thojest/comment/ilfi

Fedora 32/33 time not synced

... this is now done via Chrony...

 

timedatectl
              Local time: Thu 2021-03-04 13:15:06 EST
           Universal time: Thu 2021-03-04 18:15:06 UTC
                 RTC time: Thu 2021-03-04 18:14:27
                Time zone: America/New_York (EST, -0500)
System clock synchronized: no
              NTP service: active
          RTC in local TZ: no

systemctl status systemd-timesyncd
systemd-timesyncd.service - Network Time Synchronization
     Loaded: loaded (/usr/lib/systemd/system/systemd-timesyncd.service; disabled; vendor preset: disabled)
     Active: inactive (dead)
       Docs: man:systemd-timesyncd.service(8)

systemctl start systemd-timesyncd
systemctl enable systemd-timesyncd
hwclock --systohc

timedatectl

              Local time: Thu 2021-03-04 13:16:06 EST
           Universal time: Thu 2021-03-04 18:16:06 UTC
                 RTC time: Thu 2021-03-04 18:16:27
                Time zone: America/New_York (EST, -0500)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no

Specific drive IO stats grouped per time

> dstat -tdD total,sde 60
----system---- --dsk/sde----dsk/total-
            time     | read  writ       : read  writ
05-01 10:32:47 |                      :
05-01 10:33:47 | 9896k  112k : 630M  833M
05-01 10:34:00 |    11M     0   : 660M  994M