ebooks
# pdfunite aggregate multiple files
pdfunite infile1.pdf infile2.pdf outfile.pdf
# ebook-converter - mass pdf conversion
for src in *.pdf; do sudo ebook-convert $src .mobi; done
images
## <a name='resizeimage'></a>resize image
convert -resize 50% source.png dest.jpg
convert logo.png -resize 512x512 output.png
# more check out [imagemagick resize examples](https://legacy.imagemagick.org/Usage/resize/).
## <a name='createfavicon'></a>create favicon
convert logo.png -background white -clone 0 -resize 32x32 -extent 32x32 -delete 0 -alpha off -colors 256 favicon.ico
## <a name='convertimage'></a>convert image
potrace -s logo.bmp #replace the white zone with transparency"
potrace -s logo.bmp --fillcolor "#fffffff" #to keep white areas
potrace -s logo.bmp --opaque #to keep white areas
markdowns
# Pushing a command output to pastebin (example here ```ps```):
ps -aux |pastebinit
# Displaying a markdown to lynx:
pandoc docker.md | lynx -stdin
# onliner to kill all tty related to jomivz
# remove current tty
for i in `w|grep jomivz|cut -f2 -d" "`; do ps -ft $i >> /tmp/res.txt; done; sed '/UID.*$/d' /tmp/res.txt | cut -f2 -d" " | sort -u > /tmp/pids.txt; for j in `cat /tmp/pids.txt`; do kill -9 $j; done