Hi
I'm the new webmaster of a website (not done by me) and I have to correct some BROKEN links DUE to the fact that they are in uppercase and the server (linux) is case sensitive.

Example of dead link: I want to find them and correct them manually.
My regular expression is:
but it is not working please may you help me to correct it?

Regards

First, make a backup using tar or whatever.

Since you're using linux, you should have Perl available. Below is a shell command which will:
1.) find all plain files, with the extension .html or .htm, in and below the directory /home/siteroot
2.) escape any non-letter characters, such as spaces, in the pathname,
3.) filter out those files which do not contain 'href',
4.) do an in-place, one-liner, Perl search-and-replace on <a href... tags and <link ...href... tags, but, only turning to lowercase that which lies between the href=(with optional quote) and the first occurence of either '>' or '?' or another quote

Note: a backup file, with the extension .bak, is created for each file

find /home/siteroot -type f \( -name '*.html' -o -name '*.htm' \) | perl -lne "print quotemeta" | xargs grep -li href | xargs perl -i'.bak' -pe 's/(<(?:a|link)(?:(?!href).)+href\s*=\s*[\x27"]?)([^>?\x27"]+)/$1\L$2/igs'

<eom>

Thanks for your answer
but I use LINUX only for the SERVER - I want the regular expression with ULTRAEDIT not with SED please