Collection of Bash code snippets, mostly one liners, to ease file handling among other things
選択できるのは25トピックまでです。 トピックは、先頭が英数字で、英数字とダッシュ('-')を使用した35文字以内のものにしてください。
Victor Giers 0bb9a87a52 fixed md syntax error 1年前
README.md fixed md syntax error 1年前

README.md

Collection of Bash code snippets, mostly one liners, to ease file handling among other things

Collection of notes

rename files to reverse order

N=1; ls -tr -1 *.jpg | tac | while read file; do mv "$file" "$N".jpg; N=$((N+1)); done

rotate all images using imagemagick

mogrify -rotate 180 *.jpg
mogrify overwrites existing images which is what makes it different from convert

cut poly-shape out of image, crop image to its boundaries, fill surrounding holes in certain color or transparent (for all jpgs in folder)

for f in ./*.jpg; do convert "$f" \( -clone 0 -fill black -colorize 100 -fill white -draw "polygon 3276,2421 4945,2407 4956,4708 3287,4722" \) -alpha off -compose copy_opacity -composite -trim +repage 41050648/"$f"_left.jpg; done

do something inside each folder of this folder

for d in */; do
  cd $d;
  for dir in */; do
    for frontpage in "$dir"*.jpg; do
      echo convert "$frontpage" -resize 500x500 "$frontpage"_500px.jpg
      break 1
    done
  done
  cd ..;
done