CHEATSHEET¶
Syncronize¶
rsync -avuP – /path/*(om[1,10]) destination@192.168.x.x:/path/
Linux¶
Append clip internals to end of file
echo `xsel` >> <filename>
alias
link () {
echo `xsel` >> /mnt/c/Users/alexa/link
}
clip file internals
cat <name> | clip.exe
Convert all filenames to lowercase in bulk
$ mmv "*" "#l1"
rename all ‘.bakz’ files in the current directory to ‘.bak’, run:
$ mmv '*.bakz' '#1.bak'
help
man mmv
convert win path to bash
wslpath -m "$(pwd)"
run in win
cmd.exe /C start "$(wslpath -m "$(pwd)")"
echo "start P:\home\oleroma" | powershell.exe
COMMAND PROMPT¶
Open CURRENT dir in wtm
wt -d "%CD%"
WSL¶
wsl --set-version <distro name>
MIGRATE¶
clone apt packages
apt-clone
create list for dpkg
sudo dpkg --get-selections | sed "s/.*deinstall//" | sed "s/install$//g" > ~/pkglist
run package install process
sudo aptitude update && cat pkglist | xargs sudo aptitude install -y
GIT¶
git branch -d localBranchName
git push origin --delete remoteBranchName
SERIAL¶
minicom setsetial dmesg
sudo chmod 666 /dev/ttyS2
stty -F /dev/ttyS2 -a #check
stty -F /dev/ttyS2 sane 9600
cu -l /dev/ttyS2 -s 9600
AVR¶
avrdude -c arduino -p m328p -P /dev/ttyS2
compile into .bin
avr-gcc -Wall -g -Os -mmcu=attiny13 -o main.bin main.c
check size
avr-size -C main.bin
compile into HEX
avr-objcopy -j .text -j .data -O ihex main.bin main.hex
burn
avrdude -v -p atmega328p -c arduino -P /dev/ttyS3 -b 9600 -D -U flash:w:/mnt/c/Users/alexa/ardu/main.hex:i
win () {
HEX="P:"
STR='\\wsl$\Ubuntu-20.04'
TEX="start `wslpath -w .`"
OKS='\'$1
if [[ "$TEX" == *"$STR"* ]];
then
echo "${TEX/'\\wsl$\Ubuntu-20.04'/$HEX}$OKS" | powershell.exe
else
cmd.exe /C start "$(wslpath -m .)"'\'$1
fi
}
Rename multiple files¶
count=0; for f in *; do [ -f "$f" ] && mv -i "$f" "cin_$((++count)).${f##*.}"; done
Image manipulations¶
mogrify -resize 960x528 *.png
mogrify -resize 960 *.png
mogrify -resize 960x528! *.png
remove space colored white
mogrify input.jpg -format png -bordercolor white -border 1 -fuzz 20% -fill none -draw "matte 0,0 floodfill" -shave 1x1 input.jpg
Gif manipulations¶
optimize gif
gifsicle -O3 input.gif -o output.gif --lossy
script to make gif from video with ffmpeg
1 2 3 4 5 6 7 | |
explode video
ffmpeg -i video.mp4 %04d.png
compile video from images
ffmpeg -start_number 19 -i %04d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4
reverse video
ffmpeg -i clip.avi -vf reverse reversed.mp4
stitch together
ffmpeg -f concat -safe 0 -i list.txt -c copy out.mp4
FZF¶
CTRL-T - Paste the selected files and directories onto the command-line
Set FZF_CTRL_T_COMMAND to override the default command
Set FZF_CTRL_T_OPTS to pass additional options
CTRL-R - Paste the selected command from history onto the command-line
If you want to see the commands in chronological order, press CTRL-R again which toggles sorting by relevance
Set FZF_CTRL_R_OPTS to pass additional options
ALT-C - cd into the selected directory
Set FZF_ALT_C_COMMAND to override the default command
Set FZF_ALT_C_OPTS to pass additional options
File append¶
append to file
echo 'something' >> target.txt
insert line with text at the beginning
sed -i '1s/^/something \n/' target.md
WSL yank support¶
let s:clip = '/mnt/c/Windows/System32/clip.exe' " change this path according to your mount point
if executable(s:clip)
augroup WSLYank
autocmd!
autocmd TextYankPost * if v:event.operator ==# 'y' | call system(s:clip, @0) | endif
augroup END
endif
VIMSheet¶
list buffers
ls
replace in all buffers and write
bufdo %s/win10/win10-16ram/ge | update
tabs > buffers
taboo
buffers > tabs
tab ba (tab buffer all)
buffers > vertical windows
vert ba
buffers > horizontal
ba
wrire and exit all
wqa
Git Change Signs
GitGutterSignsToggle
slash-flip
%s/\\/\//g
Vim viewport keybinding quick reference
sp will split the Vim window horizontally. Can be written out entirely as :split.
vsp will split the Vim window vertically. Can be written out as :vsplit.
Ctrl-w Ctrl-w moves between Vim viewports.
Ctrl-w j moves one viewport down.
Ctrl-w k moves one viewport up.
Ctrl-w h moves one viewport to the left.
Ctrl-w l moves one viewport to the right.
Ctrl-w = tells Vim to resize viewports to be of equal size.
Ctrl-w - reduce active viewport by one line.
Ctrl-w + increase active viewport by one line.
Ctrl-w q will close the active window.
Ctrl-w r will rotate windows to the right.
Ctrl-w R will rotate windows to the left.
Neils Ffmpeg Cheatsheet¶
HTML5 MP4 ffmpeg encoding
variable bit rate 1080p MP3:
ffmpeg -i input_video -vcodec libx264 -crf 25 -preset medium -vf scale=-2:1080 -acodec libmp3lame -q:a 4 -ar 48000 -ac 2 output_video.mp4
fixed bit rate 1080p MP2:
ffmpeg -i input_video -vcodec libx264 -b:v 1000k -vf scale=-2:1080 -acodec mp2 -b:a 256k -ar 48000 -ac 2 output_video.mp4
no audio:
ffmpeg -i input_video -vcodec libx264 -b:v 1000k -vf scale=-2:1080 -an output_video.mp4
crop size (width:height:xoffset:yoffset):
ffmpeg -i input_video -vf crop=1500:800:200:100 -vcodec libx264 -b:v 1000k -an output_video.mp4
trim time (-ss start time, -t duration):
ffmpeg -i input_video -vcodec libx264 -b:v 1000k -an -ss 00:00:10 -t 00:00:10 output_video.mp4
mix audio and video:
ffmpeg -i input_video -vcodec libx264 -b:v 1000k -vf crop=1120:876:0:100 -i input_audio -acodec mp2 -b:a 256k -ar 48000 -ac 2 -ss 00:00:20 -t 00:00:20 output_video.mp4
crop, pan, composite:
ffmpeg -i input_video_1 -i input_video_2 -filter_complex '[1:v]crop=175:95:930:860[cropout];[cropout]scale=350:190[scaleout];[0:v][scaleout]overlay=10:10[outv]' -map '[outv]' -vcodec libx264 -b:v 1000k -map 0:a -acodec mp2 -b:a 256k -ac 2 -t 00:00:05 output_video.mp4
numbered images to video:
ffmpeg -r 30 -i %04d.jpg -vcodec libx264 -b:v 1000k -vf scale=-2:1080 -an output_video.mp4
SSH¶
Active sessions
ss | grep -i ssh
System¶
rebuild all DKMS modules
ls /var/lib/initramfs-tools | \
sudo xargs -n1 /usr/lib/dkms/dkms_autoinstaller start
Last update: February 20, 2022