Bash snippets

snippets.sh

# Print random number range, Linux or OSX:
# ex: 4707 
cat /dev/urandom | od -N2 -An -i|awk -v f=1 -v r=65000 '{printf "%i\n", f + r * $1 / 65536}' | head -n 1

# Create OSX dictionary-based passphrases 
# Ex: banish-wilsomeness-piquant
cnt=$( wc -l /usr/share/dict/words | awk '{print $1;}' ); \
for i in {1..3}
do awk -v lineno=$(jot -r 1 1 $cnt) 'lineno==NR{printf $0"-" ;exit}' \
/usr/share/dict/words
done | sed 's/.$//'

# OSX, print random number 1-64K
echo $(jot -r 1 1 $cnt)