grep error while parsing a page

mia_tech · 12-30-2013, 11:28 PM

I have a script that stores the content (php/html) of a webpage into a variable

Code:

page="$(wget -qO- link)"

then I grep the page for especific html tag like: iframe in this case

Code:

grep -in iframe page

but I'm getting error.

Code:

'rep: unrecognized option '-->
Usage: grep [OPTION]... PATTERN [FILE]...
Try 'grep --help' for more information.

towheedm · 12-30-2013, 11:52 PM

I don't think grep can search for a pattern in a variable. As far as I'm aware it works only on files.

You can echo the variable and pipe it to grep:

Code:

echo $page | grep -in "iframe"

Your search terms must be quoted.

Hope it helps.