Extremely simple offline tl;dr pages client

tldr

#!/bin/sh
# Simple offline client for tldr pages
#
# Usage:
# tldr command
#
# Updating offline page cache:
# tldr --update

pf=${HOME}/.cache/tldr/pages

if [ ! -d $pf -o ${1:-0} = "--update" ]
then
  bd=`pwd`
  rm -rf $pf
  mkdir -p $pf
  cd $pf
  git clone --depth 1 -b master --single-branch https://github.com/tldr-pages/tldr.git
  mv tldr/pages/* .
  rm -rf tldr
  rm -f index.json
  if [ ${1:-0} = "--update" ]
  then
    exit
  fi
  cd $bd
fi

file=`find $pf | grep "/${1:-0}\.md$"`
if [ $? -eq 0 ]
then
  vi -R -X "$file"
else
  echo "$1 - Command not found"
fi