randomphrase.sh

#!/usr/bin/env bash
#     Filename: getphrase.sh
#      Created: 2019-05-24 07:33
#  Last Change: mai 24 2019 08:23
#      Author: Sérgio Araújo - voyeg3r at gmail

# PRINT A RANDOM PARAGRAPH FROM A GIVEN FILE
# I have a file called phrases were I collect phrases in English
# that I am learning and I had the crazy idea of getting on random phrase

# This script will get a random phrase (the criteria is: paragraphs separated by blank lines)

# target file
file=~/.dotfiles/nvim/wiki/phrases.md

# count registers
COUNT=$(awk 'BEGIN {RS="";FS="\n"} {print NR}' $file | tail -1)


# print a random number: shuf -i 1-10 -n 1
# from the third phrase (the first two are explanatory of the file)
# the last line contains tags, nor a real phrase so I have to get
# from the third paragraph to the end minus one
RANDPHRASE=$(shuf -i 3-$((COUNT -1)) -n 1)

clear
echo "phrase number: $RANDPHRASE"
echo

awk -v number=$RANDPHRASE 'BEGIN {RS="";FS="\n"} NR==number' $file
echo