android

clang

code of conduct

google

guitar

imagemagick

linux

opensuse

pdf

  • pdfnup: pdfnup --no-landscape -o out.pdf --nup 2x2 in1.pdf in2.pdf in3.pdf in4.pdf

troll

vim

  • hex dump: xxd -p foo.bin > foo.hex or xxd -p -r foo.hex > foo.bin

  • editing binary files or to skip a header of N bytes: dd if=in.bin of=out.bin bs=1 skip=N