Simple productivity booster

lets.sh

#!/bin/bash

# lets. A productivity booster
# Based on ideas from https://gist.github.com/605292
#
# Create a /etc/hosts.work with a list of sites you wanna block and execute
#
#  $ sudo lets work
#
# When you finish your hard work, unblock the sites writing
#
#  $ sudo lets play
#

blocked_file="/etc/hosts.work"
hosts="/etc/hosts"

function block_sites {
  for host in $*; do
    line="127.0.0.1 $host"
    grep $host $hosts > /dev/null; append=$?
    if [[ $append == 1 ]]; then
      echo -e $line >> $hosts
    fi
  done
}

function unblock_sites {
  for host in $*; do
    sed -i '' "/127.0.0.1 $host/d" $hosts
  done
}

if [ $UID -ne 0 ]; then
  echo "Use me with sudo!" >&2
  exit 2
fi


if [ -e $blocked_file ]; then

  # Make a backup of the hosts file, just in case
  cp $hosts $hosts.bak

  blocked_hosts=()
  while read line; do
    # Ignore comment lines
    if [[ $line == \#* ]]; then
      continue
    fi
    blocked_hosts+=($line)
  done < $blocked_file

  case $1 in
    "work" )
      block_sites ${blocked_hosts[@]}
      ;;

    "play" )
      unblock_sites ${blocked_hosts[@]}
      ;;

    "edit" )
      $EDITOR $blocked_file
      ;;
    *)
      echo "Don't know what to do!" >&2
      echo "Usage: lets [play|work|edit]" >&2
      exit 1
      ;;
  esac
  dscacheutil -flushcache
  echo "Lets $1!!"

else
  echo "You must create $blocked_file first!"
  exit 3
fi

mac os x only

Yep. Tendría que mirar como hacer el flush de dns en linux

Se aceptan sugerencias :)

Que yo sepa no hace falta. Y pensandolo un poco... yo en mac no he tenido que refrescar las dns cuando toco el /etc/hosts. ¿Has tenido algún problema?

La verdad es que no, pero no está de más ponerlo.

Mis 0,002

https://gist.github.com/753068