Format integer string as bytes

fmti4.sh

# https://stackoverflow.com/questions/78931597/binary-integer-representation-printing-in-linux-shell?noredirect=1#comment139167055_78931597

alias fmti4struct="python -c 'import sys,struct;sys.stdout.buffer.write(struct.pack(\"<I\",int(sys.argv[1])))'"
alias fmti4tobytes="python -c 'import sys,struct;sys.stdout.buffer.write(int(sys.argv[1]).to_bytes(4,\"little\"))'"

# fmt4istruct 2123 > foo.txt
# xxd foo.txt
## 00000000: 4b08 0000                                K...