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Can't add parameter to your command in Bash

I have the following code which I call google

#!/bin/bash

q=$1
open "http://www.google.com/search?q=$q"

It opens Firefox with a keyword. For instance,

google cabal

I want special keys to be added to the command when I put the parameter after the command. Below is an example

google -x cabal

It searches for a sequence like

"cabal is"

How do I add a parameter to your command in Bash?

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3 answers


Since you have two sources of information (search query and modifier), I would use the following. It allows a single modifier ( -x

for adding "is" and enclosing everything in quotes -d

for the "define:" prefix and enclosing the entire object in quotes and -w

for simply adding a search term to restrict you to wikipedia).

Note that the placement of the quotes is controlled by the modifier, as you may need to specify an argument passed to Google or add your search terms outside of that argument. You are in complete control of what was generated in the url (make sure you check it echo

back in open

before submitting to production).

#!/bin/bash
prepend=""
append=""
case "$1" in
    -h)
        echo 'Usage: google [-{hxdw}] [<arg>]'
        echo '       -h: show help.'
        echo '       -x: search for "<arg> is"'
        echo '       -d: search for "define:<arg>"'
        echo '       -w: search for <arg> site:wikipedia.org'
        exit;;

    -x)
        prepend="\""
        append=" is\""
        shift;;
    -d)
        prepend="\"define:"
        append="\""
        shift;;
    -w)
        prepend=""
        append=" site:.wikipedia.org"
        shift;;
esac
if [[ -z "$1" ]] ; then
    query=""
else
    query="?q=${prepend}${1}${append}"
fi
echo http://www.google.com/search${query}


And here are some examples:

pax> google -w "\"bubble sort\""
http://www.google.com/search?q="bubble sort" site:.wikipedia.org

pax> google cabal
http://www.google.com/search?q=cabal

pax> google
http://www.google.com/search

pax> google -d cabal
http://www.google.com/search?q="define:cabal"

pax> google -x wiki
http://www.google.com/search?q="wiki is"

pax> google -h wiki
Usage: google [-{hxdw}] [<arg>]
       -h: show help.
       -x: search for "<arg> is"
       -d: search for "define:<arg>"
       -w: search for <arg> site:wikipedia.org

If you don't provide a search term, you just get a google search page.

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#!/bin/bash
while getopts "x:" option; do
  case "$option" in
    x) keyword="$OPTARG";;
  esac
done
#echo "$keyword"
open "http://www.google.com/search?q=$keyword"


The: indicates that after x is the expected argument.

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#!/usr/bin/env bash

while [[ $1 = - ]]; do
    case $1 in
        -x) shift; query+=" $1 is"     ;;
        -d) shift; query+=" define:$1" ;;
        -s) shift; query+=" site:$1"   ;;
        -t) shift; query+=" title:$1"   ;;
        -i) params+="&btnI"            ;;
        # ...
        -h)
            echo "usage: ${0##*/} [-x arg] [-d arg] [-s arg] [-t arg] [-ih]"
            echo
            echo "    -x: Add '[arg] is' to the google query."
            echo "    -d: Add 'define:[arg]' to the google query."
            echo "    -s: Add 'site:[arg]' to the google query."
            echo "    -t: Add 'title:[arg]' to the google query."
            echo "    -i: Do an I'm Feeling Lucky-search."
            echo "    -h: Show this help text."
            exit ;;
    esac
    shift
done

query+="$*" # implode all other arguments into the query string.

open "http://www.google.com/search?q=$query$params"
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