for i in *.avi; do ffmpeg -i "$i" "${i%.*}.mp4"; done
for i in *.gif; do ffmpeg -i "$i" "${i%.*}.mp4"; done
repair ffmpeg
ffmpeg -fflags +genpts -i input.mkv -c copy repaired.mkv
fflags
‘discardcorrupt’
Discard corrupted packets.
NAME=${MYVAR%:*} # retain the part before the colon
NAME=${NAME##*/} # retain the part after the last slash
${MYVAR#pattern} # delete shortest match of pattern from the beginning
${MYVAR##pattern} # delete longest match of pattern from the beginning
${MYVAR%pattern} # delete shortest match of pattern from the end
${MYVAR%%pattern} # delete longest match of pattern from the end So # means match from the beginning (think of a comment line) and % means from the end. One instance means shortest and two instances means longest.
${MYVAR:3} # Remove the first three chars (leaving 4..end)
${MYVAR::3} # Return the first three characters
${MYVAR:3:5} # The next five characters after removing the first 3 (chars 4-9) ${MYVAR/search/replace}gm identify Monterey.jpg
Monterey.jpg JPEG 1920x1080+0+0 DirectClass 8-bit 535.4Ki 0.000u 0m:0.000001s
display
animate=show animation eg gif
composite=blend/merge image togather
conjure = interprets MSL
convert
import=read image from window
mogrify= image scaling, image rotation, color reduction etc overwrites original
montage =tiled image
options
-adjoin = join images into a single multi-image file
image%02d.miff
-affine <matrix>
This option provides a transform matrix {sx,rx,ry,sy,tx,ty} for use by subsequent -draw or -transform options.
-antialias
remove pixel aliasing
-append
creates a single image where the images in the original set are stacked top-to-bottom.
-asc-cdl <spec>
-authenticate <string>
password for pdf
-auto-orient
-average
average a set of images
-backdrop
-colorspace <value>
the type of colorspace
Choices are: CineonLog, CMYK, GRAY, HSL, HWB, OHTA, RGB,
Rec601Luma, Rec709Luma, Rec601YCbCr, Rec709YCbCr, Transparent,
XYZ, YCbCr, YIQ, YPbPr, or YUV.
-comment "%m:%f %wx%h"
-compress <type>
the type of image compression
Choices are: None, BZip, Fax, Group3, Group4, JPEG, Lossless,
LZW, RLE, Zip, LZMA, JPEG2000, JPEG2000, JBIG, JBIG2, WebP, or
ZSTD.
Use the -quality option to set the compression level to be used
by the JPEG, JPEG-2000, PNG, MIFF, MPEG, and TIFF encoders. Use
the -sampling-factor option to set the sampling factor to be
used by the DPX, JPEG, MPEG, and YUV encoders for downsampling
the chroma channels.
-density <width>x<height>
horizontal and vertical resolution in pixels of the image This
option specifies the image resolution to store while encoding a
raster image or the canvas resolution while rendering (reading)
vector formats such as Postscript, PDF, WMF, and SVG into a
raster image. Image resolution provides the unit of measure to
apply when rendering to an output device or raster image. The
default unit of measure is in dots per inch (DPI). The -units
option may be used to select dots per centimeter instead.
The default resolution is 72 dots per inch, which is equivalent
to one point per pixel (Macintosh and Postscript standard).
Computer screens are normally 72 or 96 dots per inch while
printers typically support 150, 300, 600, or 1200 dots per inch.
To determine the resolution of your display, use a ruler to
measure the width of your screen in inches, and divide by the
number of horizontal pixels (1024 on a 1024x768 display). If
the file format supports it, this option may be used to update
the stored image resolution. Note that Photoshop stores and
obtains image resolution from a proprietary embedded profile. If
this profile is not stripped from the image, then Photoshop will
continue to treat the image using its former resolution,
ignoring the image resolution specified in the standard file
header. The density option is an attribute and does not alter
the underlying raster image. It may be used to adjust the
rendered size for desktop publishing purposes by adjusting the
scale applied to the pixels. To resize the image so that it is
the same size at a different resolution, use the -resample
option.
-depth <value>
depth of the image
This is the number of bits of color to preserve in the image.
Any value between 1 and QuantumDepth (build option) may be
specified, although 8 or 16 are the most common values. Use this
option to specify the depth of raw images whose depth is unknown
such as GRAY, RGB, or CMYK, or to change the depth of any image
after it has been read. The depth option is applied to the
pixels immediately so it may be used as a form of simple
compression by discarding the least significant bits. Reducing
the depth in advance may speed up color quantization, and help
create smaller file sizes when using a compression algorithm
like LZW or ZIP.
-format <string>
output formatted image characteristics
When used with the identify utility, or the convert utility with
output written to the 'info:-' file specification, use this
option to print information about the image in a format of your
choosing. You can include the image filename, type, width,
height, Exif data, or other image attributes by embedding
special format characters:
%b file size
%c comment
%d directory
%e filename extension
%f filename
%g page dimensions and offsets
%h height
%i input filename
%k number of unique colors
%l label
%m magick
%n number of scenes
%o output filename
%p page number
%q image bit depth
%r image type description
%s scene number
%t top of filename
%u unique temporary filename
%w width
%x horizontal resolution
%y vertical resolution
%A transparency supported
%C compression type
%D GIF disposal method
%G Original width and height
%H page height
%M original filename specification
%O page offset (x,y)
%P page dimensions (width,height)
%Q compression quality
%T time delay (in centi-seconds)
%U resolution units
%W page width
%X page horizontal offset (x)
%Y page vertical offset (y)
%@ trim bounding box
%# signature
\n newlin
\r carriage return
%% %
-format "%m:%f %wx%h"
Where "<tag>" may be one of the following:
* (print all Exif tags, in keyword=data format)
! (print all Exif tags, in tag_number format)
#hhhh (print data for Exif tag #hhhh)
ImageWidth
ImageLength
BitsPerSample
Compression
PhotometricInterpretation
FillOrder
DocumentName
ImageDescription
Make
Model
StripOffsets
Orientation
SamplesPerPixel
RowsPerStrip
StripByteCounts
XResolution
YResolution
PlanarConfiguration
ResolutionUnit
TransferFunction
Software
DateTime
Artist
WhitePoint
PrimaryChromaticities
TransferRange
JPEGProc
JPEGInterchangeFormat
JPEGInterchangeFormatLength
YCbCrCoefficients
YCbCrSubSampling
YCbCrPositioning
ReferenceBlackWhite
CFARepeatPatternDim
CFAPattern
BatteryLevel
Copyright
ExposureTime
FNumber1
IPTC/NAA
ExifOffset
InterColorProfile
ExposureProgram
SpectralSensitivity
GPSInfo
ISOSpeedRatings
OECF
ExifVersion
DateTimeOriginal
DateTimeDigitized
ComponentsConfiguration
CompressedBitsPerPixel
ShutterSpeedValue
ApertureValue
BrightnessValue
ExposureBiasValue
MaxApertureValue
SubjectDistance
MeteringMode
LightSource
Flash
FocalLength
MakerNote
UserComment
SubSecTime
SubSecTimeOriginal
SubSecTimeDigitized
FlashPixVersion
ColorSpace
ExifImageWidth
ExifImageLength
InteroperabilityOffset
FlashEnergy
SpatialFrequencyResponse
FocalPlaneXResolution
FocalPlaneYResolution
FocalPlaneResolutionUnit
SubjectLocation
ExposureIndex
SensingMethod
FileSource
SceneType
JPEG specific information (from reading a JPEG file) may be
obtained like this:
%[JPEG-<tag>]
Where "<tag>" may be one of the following:
* (all JPEG-related tags, in
keyword=data format)
Quality IJG JPEG "quality" estimate
Colorspace JPEG colorspace numeric ID
Colorspace-Name JPEG colorspace name
Sampling-factors JPEG sampling factors
-geometry <width>x<height>{+-}<x>{+-}<y>{%}{@}{!}{^}{<}{>}
Specify dimension, offset, and resize options.
example
gm convert -resize 300 image.png resize-300-image.png
gm convert -resize 300*300
gm convert -flop = mirror image
gm convert -flip = flip verticaly
gm convert -monochrome
gm convert input.jpg -resize 300x output.jpg = preserve aspect ratio
gm convert input.jpg -resize x200 output.jpg = same
gm convert input.jpg -thumbnail 300x200^ -gravity center -extent 300x200 output.jpg
convert -list format
sudo apt install libsixel-bin
img2sixel
-7, -8: Selects the SIXEL graphics norm. -7 selects the VT level 3 norm (default), and -8 selects the VT level 4 norm.
-e: Enables relative color specification.
-I: Ignores delays in GIF animations.
-i: Inverts the color output.
-u: Uses built-in dithering instead of an external one.
-g: Enables gamma correction.
-v: Prints the version number and exits.
-S, -P, -D, -O, -V, -H: Various options for handling GIF animations.
-p colors: Specifies the number of colors to use.
-m file: Specifies a source file for color quantization.
-d diffusiontype: Specifies the type of error diffusion.
-f findtype: Specifies the method for finding the nearest color.
-s selecttype: Specifies the method for selecting representative colors.
-c geometory: Specifies the output device’s screen geometry.
-w width, -h height: Specifies the width and height of the output image.
-r resamplingtype: Specifies the method for resampling.
-q quality: Specifies the output quality.
-l loopmode: Specifies the loop mode for GIF animations.
-t palettetype: Specifies the type of palette to use.
-n macronumber: Specifies the macro number for DEC SIXEL.
-C score: Specifies the score for color matching.
-b palette: Specifies the palette file.
-E encodepolicy: Specifies the policy for encoding.
-B bgcolor: Specifies the background color.
-o outfile: Specifies the output file. If not specified, the output is written to standard output.
filename ...: Specifies the input file(s). If not specified, the input is read from standard input.
stty size
43 158
cat catimg
width=$(tput cols)
height=$(tput lines)
width=$((width * 16))
height=$((height * 16))
img2sixel -w $width -h $height $1
resampling -r
nearest -> Nearest-Neighbor method
gaussian -> Gaussian filter
hanning -> Hanning filter
hamming -> Hamming filter
bilinear -> Bilinear filter (default)
welsh -> Welsh filter
bicubic -> Bicubic filter
lanczos2 -> Lanczos-2 filter
lanczos3 -> Lanczos-3 filter
lanczos4 -> Lanczos-4 filter
lossless compression tools
https://imageoptim.com/versions.html
https://imageoptim.com/online
sudo apt-get install trimage
using optipng, pngcrush, advpng and jpegopti
MozJPEG, pngquant, Pngcrush, 7zip, SVGO and Google Zopfli
https://github.com/google/guetzli
A perceptual JPEG encoder, aiming for excellent compression density at high visual quality
sudo apt install guetzli
https://www.kokkonen.net/tjko/projects.html#jpegoptim
JPEG optimization utility providing lossless and lossy compression.
sudo apt install jpegoptim
https://optipng.sourceforge.net
optiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG integrity checks and corrections.
sudo apt install optipng
https://github.com/shssoichiro/oxipng
Multithreaded PNG optimizer written in Rust
cargo install oxipng
https://pmt.sourceforge.io/pngcrush/
sudo apt install pngcrush
other
https://converseen.fasterland.net
sudo apt install converseen
uses imagemagick
https://cairosvg.org/
pip3 install cairosvg
https://dechifro.org/dcraw/
https://www.gmic.eu/
sudo apt install gmic
https://www.imagemagick.org/script/index.php
https://github.com/nagadomi/waifu2x
https://waifu2x.udp.jp/
https://pngquant.org/
Lossy compression of PNG images.
sudo apt install pngquant
https://github.com/google/zopfli
Zopfli Compression Algorithm is a compression library programmed in C to
perform very good, but slow, deflate or zlib compression.
Highly efficient PNG optimisation tool using Google's zopfli library
sudo apt install zopfli
https://github.com/Huluti/Curtail
Basic
resolution, defined as the ratio between an image's size in pixels and its physical size (usually in inches) when it is printed on paper.
expressed as ppi—pixels per inch
The resolution is usually 72 or 96ppi
Physical size: 340x190 mm
diag size=10 sqrt(1517) mm =389.487=15.3341 inch
resolution: 1920x1080 px
diag res = 120 sqrt(337) = =2202.907 px
dpi = 120 sqrt(337) *25.4 /10 sqrt(1517) = 143.66 dpi
for wolfarm Sqrt[1920^2+1080^2]*25.4 /Sqrt[190^2+340^2]
1 inch=25.4 mm
dpi=diagonal res in px / diagonal physical size in inches
windows > single-window Mode
file>new or ctrl+n
adjust: width,height,unit
advance: x,y-res,colorspace,precision(bit),gamma,color-profile,fill with,comment
tools groups:
selection tools : rectangular(R),ellipse(E),free(F),foreground,fuzzy(U),by color select(shift+O),intelligent Scissors(I)
paint tools: bucket fill(shift+b),gradient(g),pencil(p),eraser(shift+e),airbrush(a)
ink(i),mypaintbrush(y),clone(c),heal(h),presprective colne,blur/sharpen(shift+u)
smudge(s),dodge/burn(shift+d)
transform tools: align(q),move(m),crop(shift+c),rotate(shift+r),scale(shift+s)
shear(shift+h),presprective(shift+p),3d transform(shift+w),unified transform(shift+t),handle transform(shift+l),flip(shift+f),cage transform(shift+g) wrap transform(w)
paths(b)
text(t)
GEGL operation..
color picker(o)
Measure(shift+m)
zoom(z)
toolbox (ctrl+b)
default colors (d)
swap colors (x)
move tool (m) : move layers,selection and other objects
alignment tool(q) : align or arrange layers or other objects
rectangle(r),ellipse(e) select tool
free(f) : select hand drawn region with free or polygon segments
scissor(i) : select shape using intelligent edge-fittig
foreground select tool
https://docs.gimp.org/2.10/en/
vim
modal editor = various modes
normal,visual
normal=nav,comands
h=left j=down k=up l=right
u=undo K=documendation :q=close :q!=quit without saving
x=delete character under cursor
i=insert a text before cursor
A=append text after line (end) / insert after cursor
:wq= write and exit
dw=delete word (after cursor to space)
d$=delete to the end of line
d=delete operator with
motions w=to start of next word , e=to end of current word, $=end of line,0=start of line
pressing just motions moves cursor as specified
typing number before motion repeats it that many times
2w=move 2 word forward 3e=end of third word 0=start of word
d2w=delete 2 word
dd=delete and copy whole line
2dd= delete 2 line
u=undo last command
U=fix whole line to its original state/undo changes on line
<C-r>=redo
p=put previously deleted text after cursor /line below cursor (paste)
P=put text before the cursor /line above cursor
r=replace text in cursor
ce=change until end of word , delete word and put in insert mode
cw=replace from cursor
<C-g> show location in file and file status
G=move to bottom of file = last line
number G = move to that line number
gg=move to start of file = 1G
/ = search n= search for same phrase again N=search in opposite directioin
?=search in backwawrd direction
<C-o>=go back where you came from
<C-i> = go forward
%= find matching braces ),],or }
:s/old/new = substitute first old with new
:s/old/new/g = substitute command to replace old by new
/g = flag : globally in line
:#,#s/old/new/g = subst between lines #,# inclusive
:%s/old/new/g = whole file
:%s/old/new/gc = whole file with confirmation prompt
:! cmd = executes shell cmd1
:w filename = write to filename
v : something w filename : write selected text to file
:r filename = retrive file
:r !ls
o= insert new line below cursor
O= same as o but ablove line
a= insert text after cursor
a,i and A all goes to same insert mode
R = replace more than one text / overwrite text
y= yank (copy) selected text
yy= copy line
p= put/paste
v=visual select
j$=end of next line
yw=yank word
:set ic = set ignorecase
:set hls is = set hlsearch and incsearch
:set noic = disable ignorecase
:set invic = invert value of setting
:set nohlsearch = remove highliting from search
/ignore\c = search with ignore case
<C-w><C-w> = jump from one window to another
:help w
:help c_CTRL-D
:e filename = load file
:saveas path/file
:x = only save if necessary
ZZ or :wq = write and quiot
:bn , :bp = next and previous buffer
<C-d> <Tab> = command line completion in : option
http://yannesposito.com/Scratch/en/blog/Learn-Vim-Progressively/
http://benmccormick.org/learning-vim-in-2014/
http://vimcasts.org/
http://derekwyatt.org/vim/tutorials/
http://learnvimscriptthehardway.stevelosh.com/
http://www.moolenaar.net/habits.html
https://github.com/mhinz/vim-galore
. = repeat last command
Ncommand= repeat command n times
100ni am fine <CR> <ESC> = writes i am fine 100 times
NG= goto line N
*,# = goto next,previous word under cursor
<start position><command><end position>
0y$ = goto start and copy to end of line
y2/foo yank to second occurance of foo
^ = go to first character on the line
g_ → go to the last character on the line
fa → go to next occurrence of the letter a on the line. , (resp. ;) will find the next (resp. previous) occurrence.
t, → go to just before the character ,.
3fa → find the 3rd occurrence of a on this line.
F and T → like f and t but backward.
dt" → remove everything until the "
visual mode
<action>a<object> and <action>i<object>
action = d (delete), y (yank), v(select in visual)
object can be: w a word, W a WORD (extended word), s a sentence, p a paragraph. But also, natural character such as ", ', ), }, ].
rectangular block
0<C-v><C-d>I-- [ESC]
<C-q> if clipboard is not empty
<C-p>, <C-n> completions
:qa = record macros in register a
@@= replay lasst executed macros
qaYp<C-a>q →
qa start recording.
Yp duplicate this line.
<C-a> increment the number.
q stop recording.
<C-a> increment number
visual selection = v,V,<C-v>
J → join all the lines together.
< (resp. >) → indent to the left (resp. to the right).
= → auto indent
:split :vsplit
:help split
:split → create a split (:vsplit create a vertical split)
<C-w><dir> : where dir is any of hjkl or ←↓↑→ to change the split.
<C-w>_ (resp. <C-w>|) : maximise the size of the split (resp. vertical split)
<C-w>+ (resp. <C-w>-) : Grow (resp. shrink) split
mount rootfs https://www.gentoo.org/downloads/ https://distfiles.gentoo.org/releases/amd64/autobuilds/ to get list of tarballs from terminal only : curl https://distfiles.gentoo.org/releases/amd64/autobuilds/latest-stage3.txt 20230917T164636Z/stage3-amd64-hardened-nomultilib-openrc-20230917T164636Z.tar.xz 239532616
curl https://distfiles.gentoo.org/releases/amd64/autobuilds/20230917T164636Z/stage3-amd64-hardened-nomultilib-openrc-20230917T164636Z.tar.xz > stage3.tar.xz sudo tar xpvf stage3-*.tar.xz --xattrs-include='*.*' --numeric-owner -C /mntor
sudo tar xpvf stage3-amd64-hardened-nomultilib-openrc-20230917T164636Z.tar.xz --xattrs-include='*.*' --numeric-owner -C /mnt nano -w /mnt/etc/portage/make.conf
COMMON_FLAGS="-march=native -O2 -pipe"##our nproc is 4 so j4 MAKEOPTS="-j4" ACCEPT_LICENSE="*"
VIDEO_CARDS="intel "
INPUT_DEVICES="libinput" ## -kmod for all modules built inside kernel USE="-kmod -dbus -elogind -gnome -kde -consolekit -polkit -introspection -vala -pulseaudio -llvm -X -vulkan wayland"
ACCEPT_LICENSE="*"
VIDEO_CARDS="intel "
INPUT_DEVICES="libinput"
LC_MESSAGES=C.utf8
FFTOOLS="aviocat ffescape ffeval fourcc2pixfmt"
PORTAGE_SCHEDULING_POLICY="idle"
L10N="en_US"
LINGUAS="en_US"
LUA_TARGETS="luajit" mkdir -p /mnt/etc/portage/repos.conf
cp /mnt/usr/share/portage/config/repos.conf /mnt/etc/portage/repos.conf/gentoo.conf
cat /mnt/etc/portage/repos.conf/gentoo.conf cp --dereference /etc/resolv.conf /mnt/etc/ ls -la /mnt/etc/resolv.conf
-rw-r--r-- 1 root root 84 Sep 24 13:44 /mnt/etc/resolv.conf cat /mnt/etc/resolv.conf
# Resolver configuration file.
# See resolv.conf(5) for details.
nameserver 1.1.1.1 cat chroot.sh
#!/bin/sh
mount --rbind /dev /mnt/dev && mount --make-rslave /mnt/dev
mount --rbind /dev/pts /mnt/dev/pts && mount --make-rslave /mnt/dev/pts
mount --rbind /proc /mnt/proc && mount --make-rslave /mnt/proc
mount --rbind /sys /mnt/sys && mount --make-rslave /mnt/sys
chroot /mnt /bin/sh
bash chroot.sh
source /etc/profile
emerge-webrsynceselect news list,read,purgeman news.eselect eselect profile list after changing profile update @world setemerge --ask --verbose --update --deep --newuse @world emerge --info | grep ^USEless /var/db/repos/gentoo/profiles/use.desc portage git syncemerge -aapp-eselect/eselect-repository dev-vcs/giteselect repository remove gentooeselect repository add gentoo git https://github.com/gentoo-mirror/gentoo.gitportageq repos_config /rm -r /var/db/repos/gentooemaint sync -r gentoohttps://wiki.gentoo.org/wiki/Eixmkdir/etc/portage/env//etc/portage/env/eix-extra-econf.confEXTRA_ECONF="--enable-security --enable-new-dialect --enable-strong-optimization"/etc/portage/package.env/eixapp-portage/eix eix-extra-econf.confemerge --ask app-portage/eix/etc/eixrc/01-cacheOVERLAY_CACHE_METHOD="assign"cat /etc/portage/package.use/allapp-admin/doas persist
media-libs/mesa vaapi
sys-auth/seatd server
gui-wm/sway -swaynag
x11-misc/i3blocks -contrib
media-video/mpv -xv alsa vaapi alsa drm jpeg lcms
media-video/ffmpeg alsa libdrm vaapi alsa mp3 vorbis lcms
net-wireless/wpa_supplicant tkip wps wep
media-libs/freetype harfbuzz
sys-apps/util-linux udev
media-libs/libplacebo -vulkan
app-text/poppler -utils cairo
app-misc/jq -oniguruma
dev-libs/light udev
net-wireless/iwd standalone -monitor
sys-apps/openrc -netifrc
net-misc/socat -ssl -ipv6
imezone and locale
ls /usr/share/zoneinfo/Asia
echo "Asia/Kathmandu" > /etc/timezone
rm /etc/localtime
emerge --config sys-libs/timezone-data
[make symlink to /etc/localtime i.e ln -s /usr/share/zoneinfo/Asia/Kathmandu /etc/localtime if no file is present]
nano /etc/locale.gen
en_US.UTF-8 UTF-8
locale-geneselect locale listeselect locale set Ncat /etc/env.d/02locale env-update && source /etc/profile && export PS1="(chroot) ${PS1}"
manually download firmware and put in /lib/firmware
emerge --ask sys-kernel/gentoo-sources https://packages.gentoo.org/packages/sys-kernel/gentoo-sources
eselect kernel listeselect kernel set 1ls -l /usr/src/linux
emerge --ask sys-apps/pciutils
cd /usr/src/linux make menuconfigmake && make modules_installmake install blkid nano -w /etc/fstab#/dev/sda3 / ext4 noatime 0 1/dev/sda4 /home ext4 rw,noatime 0 0 emerge --ask app-portage/cpuid2cpuflagscpuid2cpuflagsCPU_FLAGS_X86: aes avx avx2 avx512f avx512dq avx512cd avx512bw avx512vl avx512vbmi f16c fma3 mmx mmxext pclmul popcnt rdrand sha sse sse2 sse3 sse4_1 sse4_2 ssse3
echo "*/* $(cpuid2cpuflags)" > /etc/portage/package.use/00cpu-flags
emerge --deselect gnumericemerge --update --deep @worldemerge --update --deep --newuse @worldemerge --ask --depclean
* - BLK_DEV_BSG
* - DEVTMPFS
* - IDE
* - INOTIFY_USER
* - SYSFS_DEPRECATED
* - SYSFS_DEPRECATED_V2
* - SIGNALFD
* - EPOLL
* - FHANDLE
* - NET
* - UNIXfor wpsscripts/config --enable CONFIG_KEY_DH_OPERATIONSdbusor wheel group to access iwctlfirmwarenano /etc/portage/package.licensesys-kernel/linux-firmware @BINARY-REDISTRIBUTABLEemerge --ask sys-kernel/linux-firmwareor copy from linxu-firmware-git repo to /lib/firmware dir
>>> Existing ${T}/environment for 'mesa-23.1.6' will be sourced. Run
>>> 'clean' to start with a fresh environment.
ebuild /var/db/repos/gentoo/media-libs/mesa/mesa-23.1.6.ebuild installebuild /var/db/repos/gentoo/media-libs/mesa/mesa-23.1.6.ebuild qmerge or
emerge --resumenano /etc/portage/package.use/allapp-admin/doas persist
sys-auth/seatd server builtin
gui-wm/sway -swaynag
#x11-misc/i3blocks -contrib
dev-libs/light udev
net-wireless/iwd standalone -monitor
media-video/ffmpeg mp3 alsa libdrm x264 x265 vaapi
media-video/mpv alsa X drm -xv vaapiemerge --ask app-portage/gentoolkithttps://wiki.gentoo.org/wiki/Equeryemerge -a wofi....note version of adwaita-icon-theme and librsvgskip rust for nownano /etc/portage/profile/package.providedx11-themes/adwaita-icon-theme-44.0
gnome-base/librsvg-2.56.3REFCOUNT_FULLPAGE_POISONING_ZERO
ffmpeg
AV1=webm,mkv ,ISOBMFF( MP4, 3GP, 3G2, .mj2, .dvb, .dcf, .m21, .f4v, HEIF),RTP
AV1, VP9, Theora, MPEG-5 Base profile= free
VVC, HEVC, AVC, MPEG-5 Main profile= propi
GIF, MP3, MPEG-1, MPEG-2, MPEG-4 Part 2 = expired
AV1 implementation = Libaom , SVT-AV1, rav1e, dav1d, Cisco AV1
vaapi on mesa
https://gitweb.gentoo.org/repo/gentoo.git/tree/media-libs/mesa/mesa-23.1.6.ebuild
ewarn "Ignoring USE=vaapi since VIDEO_CARDS does not contain d3d12, r600, radeonsi, or nouveau"
emerge -a media-libs/libva-intel-media-driver
USE=vulkan now needs llvm for mesa
emerge -ap firefox-bin media-libs/libogg media-libs/flac media-libs/libvorbis media-sound/mpg123 media-libs/speexdsp media-libs/webrtc-audio-processing media-libs/libsndfile media-libs/libpulse media-plugins/alsa-plugins portageq can be used to show the active features:
portageq envvar FEATURES | xargs -n 1
To find out what FEATURES are set by default
emerge --info | grep ^FEATURES=
FEATURES="userfetch"
chown --recursive --verbose portage:portage /var/db/repos/gentoo
sudo chmod -R g+rwX /var/db/repos/gentoo/
verify distfiles
To re-verify the integrity and (potentially) re-download previously removed/corrupted distfiles for all currently installed packages, run:
emerge --ask --fetchonly --emptytree @world
localization
L10N="en_US"
LINGUAS="en_US"
LINGUAS="", most ebuilds would install only the packages' default language but none of the LC_MESSAGES files.
A USE_EXPAND variable called L10N decides which extra localization support will be installed.
complex entries have a different syntax because L10N uses IETF language tags (aka BCP 47). For example, pt_BR and sr@latin in LINGUAS become pt-BR and sr-Latn in L10N, respectively.
cat /var/db/repos/gentoo/profiles/desc/l10n.desc
grep -i english /var/db/repos/gentoo/profiles/desc/l10n.desc
cat /etc/locale.gen
en_US.UTF-8 UTF-8
localedef --list-archive
eselect locale list
eselect locale set 1
/etc/conf.d/keymaps
keymap="us"
windowkeys="YES"
extended_keymaps=""
dumpkeys_charset=""
fix_euro="NO"
systemd-utils
* config:
* - BLK_DEV_BSG
* - DEVTMPFS
* - IDE
* - INOTIFY_USER
* - SYSFS_DEPRECATED
* - SYSFS_DEPRECATED_V2
* - SIGNALFD
* - EPOLL
* - FHANDLE
* - NET
* - UNIX
/bin/systemd-hwdb
/lib/udev/ata_id
/bin/systemd-tmpfiles
/bin/udevadm
/lib/udev/cdrom_id
/lib/udev/mtd_probe
/lib/udev/fido_id
/lib/udev/scsi_id
/lib/udev/v4l_id
/lib64/libudev.so.1.7.7
module less system
make.conf
use="-kmod"
cat /var/lib/portage/world
app-admin/doas
app-editors/nano
app-editors/neovim
app-eselect/eselect-repository
app-misc/jq
app-misc/neofetch
app-misc/nnn
app-portage/cpuid2cpuflags
app-portage/eix
app-portage/gentoolkit
app-shells/bash-completion
app-text/zathura
app-text/zathura-pdf-poppler
dev-libs/dbus-glib
dev-libs/elfutils
dev-libs/light
dev-python/pip
dev-vcs/git
gui-apps/foot
gui-apps/grim
gui-apps/slurp
gui-apps/swaylock
gui-apps/wl-clipboard
gui-apps/wofi
gui-wm/sway
media-libs/libva-intel-media-driver
media-sound/alsa-utils
media-sound/apulse
media-video/mpv
net-misc/socat
net-misc/yt-dlp
net-wireless/iwd
net-wireless/wireless-regdb
sys-apps/ripgrep
sys-fs/ncdu
sys-fs/ntfs3g
sys-process/htop
x11-libs/libX11
x11-libs/libXcomposite
x11-libs/libXcursor
x11-libs/libXdamage
x11-libs/libXext
x11-libs/libXrandr
x11-libs/libXtst
x11-misc/i3blocks
refrences:https://wiki.gentoo.org/wiki/GCC_optimization
https://wiki.gentoo.org/wiki/Safe_CFLAGS https://wiki.gentoo.org/wiki/Localization/Guide https://github.com/kzwkt/gentoo-dell-inspiron-3501 https://wiki.gentoo.org/wiki/Portage_with_Git
https://wiki.gentoo.org/wiki/Recommended_applicationshttps://wiki.gentoo.org/wiki/List_of_software_for_Waylandhttps://wiki.gentoo.org/wiki/FEATUREShttps://wiki.gentoo.org/wiki/Handbook:AMD64/Working/Features
https://wiki.gentoo.org/wiki/Localization
https://wiki.gentoo.org/wiki/Localization/Guide#Locale_system
pip install pip-autoremove
pip-autoremove pkgname
Src
http://stackoverflow.com/questions/7915998/ddg#27713702
cat .config/pip/pip.conf
[global]
break-system-packages = true
upgrade all
pip freeze --user | cut -d'=' -f1 | xargs -n1 pip install --user --upgrade