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Shell Programming and Scripting

Passing Arguments in Shell Scripts

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# 36  
Old 03-05-2009
Well for non-option arguments the user gets a message 'Ilegal option'
Code:
while getopts s:f:vVh:A opt
do
  case $opt in
    A) echo Autor:test; exit;;
    v) echo version 1.0; exit;;
    s) searchphrase=$OPTARG ;;
    -*) echo invalid option >&2; exit 1 ;;
   esac
done
shift $(( $OPTIND - 1 ))

# 37  
Old 03-05-2009
Quote:
Originally Posted by kev_1234
Well for non-option arguments the user gets a message 'Ilegal option'
Code:
while getopts s:f:vVh:A opt
do
  case $opt in
    A) echo Autor:test; exit;;
    v) echo version 1.0; exit;;
    s) searchphrase=$OPTARG ;;
    -*) echo invalid option >&2; exit 1 ;;
   esac
done
shift $(( $OPTIND - 1 ))


That's an illegal option, not a non-option argument. A non-option argument doesn't begin with a hyphen.

And it should be:

Code:
    *) echo invalid option >&2; exit 1 ;;

# 38  
Old 03-05-2009
Great Chris everything works now and thanks for correction.......Smilie

Just before I annoy you anymore......

what does
Code:
shift $(( $OPTIND -1 ))

do?

Thanks
# 39  
Old 03-05-2009
Chris I noticed something.....

My code stands like this

Code:
while getopts s:f:vVh:A opt
do
  case $opt in
    A) echo Autor:K.S.Rehsi; exit;;
    v) echo version 1.0; exit;;
    s) searchphrase=$OPTARG ;;
    *) echo Invalid option >&2; exit 1 ;;
   esac
done
shift $(( $OPTIND - 1 ))

if [ $# -gt 0 ]
then
  echo "If there are spaces in the search string, enclose it in double quotes"
  exit 1
fi
wget  -t1  -E -e robots=off -awGet.log -T 200 -H -Priserless -O mylist1.html -U "Mozilla" "http://www.google.co.uk/search?q=${searchphrase}&btnG=Search"

Now, if input a searchphrase like ./test -s Hello magzine

it give me the error message as planned......

But as I correct the searchphrase like ./test -s "Hello magzine" there is no results in the file?????

Have I put the code in the right place??
# 40  
Old 03-05-2009

It works for me:

Code:
$ xx.sh -s "Hello magazine"
$ ls -l mylist1.html
-rw-rw-r--  1 chris chris 23901 Mar  5 14:53 mylist1.html

# 41  
Old 03-05-2009
Yeah the file is being created in mine alright but it seems to be empty in my case.
I have to input the searchphrase twice to get the output in the .html files....??

Also when I open mylist6.html and mylist7.html in text editor there were errors but again if I input the searchphrase again......it goes away.....

I guess its probably my scripting......or my ubuntu......
Code:
while getopts s:f:vVh:A opt
do
  case $opt in
    A) echo Autor:K.S.Rehsi; exit;;
    v) echo version 1.0; exit;;
    s) searchphrase=$OPTARG ;;
    *) echo Invalid option >&2; exit 1 ;;
   esac
done
shift $(( $OPTIND - 1 ))

if [ $# -gt 0 ]
then
  echo "If there are spaces in the search string, enclose it in double quotes"
  exit 1
fi

wget  -t1  -E -e robots=off -awGet.log -T 200 -H -Priserless -O mylist1.html -U "Mozilla" "http://www.google.co.uk/search?q=${searchphrase}&btnG=Search"
# put a newline at the start of a link
cat mylist1.html |sed -e 's#<a href#\n<a href#g' >mylist2.html
# put a newline at the end of link 
cat mylist2.html |sed -e 's#</a>#</a>\n#g' >mylist3.html
# now we need to extract all lines that begin with <a href="http:
cat mylist3.html |sed -n -e '/^<a href="http:/p' >mylist4.html
#now remove urls that contain google
cat mylist4.html |sed -n -e '/\.google/!p' >mylist5.html
#now remove urls that are numeric
cat mylist5.html |sed -n -e '/[0-9]*[0-9]*[0-9]*\.[0-9]*[0-9]*[0-9]*\.[0-9]*[0-9]*[0-9]*\.[0-9]*[0-9]*[0-9]*/!p' >mylist6.html
#Remove all HTML tags
cat mylist6.html |sed -e :a -e 's/<[^>]*>//g;'  >mylist7.html

# 42  
Old 03-05-2009
This is the type of error i get........
The error keeps moving from one file to another......meaning......the file that was getting this error doesn't get it anymore but the file after it gets it......

Quote:
Could not open the file /home/kev/Documents/test1/mylist8.html using the Unicode (UTF-8) character coding.
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