Personal Gentoo Index Page

I tried Gentoo once, and I fell in love!

How, why, when? Gentooooooooowiiie :)

When I told a friend that I would like to try Gentoo, the year was then 
2008 then the person said that I will go back to Debian because I 
will get tired of compiling code and doing everything from scratch all the time.

That person was wrong ;)

For 15 years I have been part of the Gentoo Community and in this part 
I have intended to post everything that I have created around gentoo 
and also various contributions from myself Gentoo

Respect to everyone that has been sharing your knowledge during the years, 
now im trying to give back what i've learned during the years :)

Print useflag description

Q-Applets (quse)Gentoolkit (equery)

quse -D  -pnet-misc/remmina

equery u net-misc/remmina

Rebuild modules everytime kernel was upgraded/downgraded

emerge @module-rebuild

Sync Portage Tree

if which eix &> /dev/null; then
  eix-sync
  eix-update
else
  emerge --sync
fi

Re-emerge all ebuilds with missing files

emerge -av1 `qlist --installed --nocolor | uniq \
| while read cp; do 
  qlist --exact $cp | while read file; do 
    test -e $file || { echo $cp; \
    echo "$cp: missing $file (and maybe more)" 1>&2; 
    break; 
  }; 
  done; 
done`

Print useflags NOT in use

eix --print-all-useflags | grep -o "\-.*" | grep -v "_" | grep -v "+"

Print last time emerge was used

grep "emerge on" /var/log/emerge.log | cut -d: -f2- | tr '[:upper:]' '[:lower:]' | sed 's/ started/Last used/g' | tail -n 1

Print all packages that is installed from custom overlays

eix -c --installed-overlay

Modules short with description

modinfo $(cut -d' ' -f1 /proc/modules) | sed '/^dep/s/$/\n/; /^file\|^desc\|^dep/!d'

Print current installed distro

awk -F= '/^NAME/{gsub(/[[:space:]]/, "", $2); print tolower($2); exit}' /etc/os-release

View emerge log by date in humand friendly time

awk -F: '{print strftime("%Y-%m-%d -> %X --> ", $1),$2}' /var/log/emerge.log

Find the right intel-ucode firmware for Intel GPU

iucode_tool -S -l /lib/firmware/intel-ucode/*

Genkernel

Configure dropbear in initramfs

Install net-misc/dropbear

emerge --ask net-misc/dropbear

Create/Copy authorized_keys file to /etc/dropbear/authorized_keys

cat ~/.ssh/authorized_keys > /etc/dropbear/authorized_keys

Set SSH Enable in /etc/genkernel.conf or use --ssh with genkernel command

sed -i 's/SSH="yes"/SSH="no"/g' /etc/genkernel.conf

Include Firmware files in /etc/genkernel.conf

FIRMWARE_INSTALL="yes"
FIRMWARE="yes"
FIRMWARE_DIR="/lib/firmware"
FIRMWARE_FILES="i915/skl_dmc_ver1_27.bin, rtlwifi/rtl8192eu_nic.bin, regulatory.db, regulatory.db.p7s, intel-ucode/06-5e-08"

Include microcode in /etc/genkernel.conf

MICROCODE="ALL"
MICROCODE_INITRAMFS="yes"

Print in percent of all available packages in tree we installed

installed_count=$(eix --only-names -I | wc -l)
total_count=$(eix --only-names | wc -l)
percentage=$(printf "%.2f" "$(bc <<< "scale=2; $installed_count / $total_count * 100")")
printf "%s%% of 100%% packages from Gentoo Linux is installed\n" "$percentage"

For view bluetooth percentage in bluetoothctl and plasma-desktop tray icon

sed -i 's/experimental=false/experimental=true' /etc/bluetooth/main.conf

bluetoothctl info
  Device 14:3F:A6:15:93:43 (public)
        Name: WH-1000XM4
        Alias: WH-1000XM4
        Class: 0x00240404
        Icon: audio-headset
        Paired: yes
        Bonded: yes
        Trusted: yes
        Blocked: no
        Connected: yes
        LegacyPairing: no
        UUID: Vendor specific           (00000000-deca-fade-deca)
        UUID: Headset                   (00001108-0000-1000-8000)
        UUID: Audio Sink                (0000110b-0000-1000-8000)
        UUID: A/V Remote Control Target (0000110c-0000-1000-8000)
        UUID: Advanced Audio Distribu.. (0000110d-0000-1000-8000)
        UUID: A/V Remote Control        (0000110e-0000-1000-8000)
        UUID: Handsfree                 (0000111e-0000-1000-8000)
        UUID: PnP Information           (00001200-0000-1000-8000)
        UUID: Vendor specific           (81c2e72a-0591-443e-a1ff)
        UUID: Vendor specific           (8901dfa8-5c7e-4d8f-9f0c)
        UUID: Vendor specific           (931c7e8a-540f-4686-b798)
        UUID: Vendor specific           (96cc203e-5068-46ad-b32d)
        UUID: Vendor specific           (b9b213ce-eeab-49e4-8fd9)
        UUID: Vendor specific           (f8d1fbe4-7966-4334-8024)
        Modalias: usb:v054Cp0D58d
        Battery Percentage: 0x32 (50)

Enabling static-user for qemu-arm-static

Ensure that qemu is installed with the static-user flag to obtain the static component.

echo "app-emulation/qemu <other_usre_flags> static-user" >> /etc/portage/package.use/qemu

Mullvad Browser and Tor Browser requires

This will solve Couldn't load XPCOM. issues for those browsers

echo "x11-misc/appmenu-gtk-module wayland" > /etc/portage/package.use/appmeny-gtk-module
echo ">=x11-libs/gtk+-3.24.38 wayland\nx11-libs/gtk wayland" >> /etc/portage/package.use/gtk

Video Editor

https://avidemux.org/smif/index.php/topic,18182.0.html

cat << "EOF" > /etc/portage/package.use/avidemux
media-libs/avidemux-plugins a52 aac alsa fontconfig gui lame libsamplerate nvenc opengl opus oss pulseaudio truetype twolame vdpau vorbis vpx x264 x265  xv xvidmedia-libs/avidemux-core nls nvenc sdl vaapi vdpau xc    
media-video/avidemux gui nls opengl sdl vaapi vdpau xv    
>=media-libs/avidemux-core-2.8.1-r1 vdpau vaapi nvenc
EOF

emerge media-video/avidemux

It's possible to do the same operations using the command line

avidemux \ 
    --load input.avi \
    --vcd-res \
    --video-process \
    --video-codec VCD \
    --save /tmp/videocd.m1v \
    --audio-process \
    --audio-normalize \
    --audio-downample \
    --audio-codec MP2 \
    --audio-bitrate 224 \
    --save-uncompressed-audio \
    /tmp/video4you.mp2 \
    --quit

Bindfmt for Qemu

:python3.11:M::\xa7\x0d\x0d\x0a::/usr/bin/python3.11:
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:qemu-alpha:M::\x7f\x45\x4c\x46\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x26\x90:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/libexec/qemu-binfmt/alpha-binfmt-P:OCPF
:qemu-arm:M::\x7f\x45\x4c\x46\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/libexec/qemu-binfmt/arm-binfmt-P:OCPF
:qemu-armeb:M::\x7f\x45\x4c\x46\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/libexec/qemu-binfmt/armeb-binfmt-P:OCPF
:qemu-cris:M::\x7f\x45\x4c\x46\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x4c\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/libexec/qemu-binfmt/cris-binfmt-P:OCPF
:qemu-hexagon:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xa4\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/libexec/qemu-binfmt/hexagon-binfmt-P:OCPF
:qemu-hppa:M::\x7f\x45\x4c\x46\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x0f:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/libexec/qemu-binfmt/hppa-binfmt-P:OCPF
:qemu-loongarch64:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x02\x01:\xff\xff\xff\xff\xff\xff\xff\xfc\x00\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/libexec/qemu-binfmt/loongarch64-binfmt-P:OCPF
:qemu-m68k:M::\x7f\x45\x4c\x46\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x04:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/libexec/qemu-binfmt/m68k-binfmt-P:OCPF
:qemu-microblaze:M::\x7f\x45\x4c\x46\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\xba\xab:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/libexec/qemu-binfmt/microblaze-binfmt-P:OCPF
:qemu-mips64:M::\x7f\x45\x4c\x46\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08:\xff\xff\xff\xff\xff\xff\xff\x00\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/libexec/qemu-binfmt/mips64-binfmt-P:OCPF
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:qemu-mips:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00:\xff\xff\xff\xff\xff\xff\xff\x00\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20:/usr/libexec/qemu-binfmt/mips-binfmt-P:OCPF
:qemu-mipsel:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00:\xff\xff\xff\xff\xff\xff\xff\x00\x00\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00:/usr/libexec/qemu-binfmt/mipsel-binfmt-P:OCPF
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:qemu-mipsn32el:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00:\xff\xff\xff\xff\xff\xff\xff\x00\x00\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00:/usr/libexec/qemu-binfmt/mipsn32el-binfmt-P:OCPF
:qemu-ppc64:M::\x7f\x45\x4c\x46\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15:\xff\xff\xff\xff\xff\xff\xff\xfc\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/libexec/qemu-binfmt/ppc64-binfmt-P:OCPF
:qemu-ppc64le:M::\x7f\x45\x4c\x46\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15\x00:\xff\xff\xff\xff\xff\xff\xff\xfc\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\x00:/usr/libexec/qemu-binfmt/ppc64le-binfmt-P:OCPF
:qemu-ppc:M::\x7f\x45\x4c\x46\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x14:\xff\xff\xff\xff\xff\xff\xff\xfc\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/libexec/qemu-binfmt/ppc-binfmt-P:OCPF
:qemu-riscv32:M::\x7f\x45\x4c\x46\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xf3\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/libexec/qemu-binfmt/riscv32-binfmt-P:OCPF
:qemu-riscv64:M::\x7f\x45\x4c\x46\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xf3\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/libexec/qemu-binfmt/riscv64-binfmt-P:OCPF
:qemu-s390x:M::\x7f\x45\x4c\x46\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x16:\xff\xff\xff\xff\xff\xff\xff\xfc\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/libexec/qemu-binfmt/s390x-binfmt-P:OCPF
:qemu-sh4:M::\x7f\x45\x4c\x46\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x2a\x00:\xff\xff\xff\xff\xff\xff\xff\xfc\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/libexec/qemu-binfmt/sh4-binfmt-P:OCPF
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:qemu-sparc32plus:M::\x7f\x45\x4c\x46\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x12:\xff\xff\xff\xff\xff\xff\xff\xfc\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/libexec/qemu-binfmt/sparc32plus-binfmt-P:OCPF
:qemu-sparc64:M::\x7f\x45\x4c\x46\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x2b:\xff\xff\xff\xff\xff\xff\xff\xfc\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/libexec/qemu-binfmt/sparc64-binfmt-P:OCPF
:qemu-sparc:M::\x7f\x45\x4c\x46\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x02:\xff\xff\xff\xff\xff\xff\xff\xfc\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/libexec/qemu-binfmt/sparc-binfmt-P:OCPF
:qemu-xtensa:M::\x7f\x45\x4c\x46\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x5e\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/libexec/qemu-binfmt/xtensa-binfmt-P:OCPF
:qemu-xtensaeb:M::\x7f\x45\x4c\x46\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x5e:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/libexec/qemu-binfmt/xtensaeb-binfmt-P:OCPF