regex

Linux: Rename Expression To Remove First Character From a File Name

by Vivek Gite on April 18, 2011 · 6 comments

I‘ve over 1000′s of files starting with _ character as follows:

_file1.txt
_foo1.txt
_2424.txt
_bar10000.txt

How do I remove the first character from a file name:

file1.txt
foo1.txt
2424.txt
bar10000.txt

{ 6 comments }

Postfix Hide Client (MUA) System IP Address / Hostname

by Vivek Gite on June 1, 2009 · 2 comments

I‘ve central mail server gateway. All of our internal systems through this box. How do I remove or hide the hostnames and IP addresses of our internal systems from the messages headers before they go out to other users for security purpose?

{ 2 comments }

Lighttpd as you compiled without pcre support error and solution

by Vivek Gite on November 19, 2007 · 0 comments

Q. I’m using lighttpd under CentOS 5 and getting the following error: …can’t handle ‘$HTTP[url] =~ …’ as you compiled without pcre support. My question is What is pcre support, and how do I solve this problem? A. Pcre is nothing but Perl-compatible regular expression library. PCRE has its own native API, but a set [...]

{ 0 comments }