centos - Find and delete line in .htaccess file

I am trying to figure out how could possible a command do search and delete line from .htaccess file . the following line is the line i want to search and delete

RedirectMatch \.(dynamiccontent|pl|plx|perl|cgi|php|php4|php4|php6|php3|shtml)$ http://server.linux.com/cgi-sys/movingpage.cgi

Note that this line have special characters

This is the command to find the code

find /home*/*/public_html/ -mindepth 1 -iname "\.htaccess" -type f -exec grep -Hi "RedirectMatch*" '{}' \;

But this is only find not find and delete the line in .htaccess file

How can i modify the command to find and delete the line that i mention ?

This should do it:

while IFS= read -r -d '' file; do
grep -iv "RedirectMatch*" $file>tmp
mv tmp $file
done < <(find /home*/*/public_html/ -mindepth 1 -iname "\.htaccess" -type f -print0)
rm tmp

The output of the find command gets used by process substitution in the while loop, as $file. Then grep -vi $file returns every line in $file that doesn't match (ignoring case). It writes that to a temp file called tmp, and then copies it over the original .htaccess files. For safety you could add this extra line before the mv command:

mv "$file" "$file".old

This will rename the original htaccess files to .htaccess.old, in case something is borked.