Regular Expression for Random pattern


 
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Old 07-23-2010
CPU & Memory Regular Expression for Random pattern

What would be the regular expression that can search for a Pattern, having 8 characters out of which atleast 1 digit, 1 lower case, 1 upper case letter and 1 special character must be there. But these can occur at any place randomly. Please help me out.
I'm using find $dir -name "*.txt" -exec egrep -ni "[a-z]+[A-Z]+[0-9]+['\~', '\!', '\$', '\%', '\^', '\&', '\-', '\=',' \.', '\:', '\;']" {} \; -print
But this is working only for pattern that begins with lower then upper then digit and then special characters. What if they can happen at any random place... Smilie
Thanks in advance...Smilie
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CURLOPT_WILDCARDMATCH(3)				     curl_easy_setopt options					  CURLOPT_WILDCARDMATCH(3)

NAME
CURLOPT_WILDCARDMATCH - enable directory wildcard transfers SYNOPSIS
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_WILDCARDMATCH, long onoff); DESCRIPTION
Set onoff to 1 if you want to transfer multiple files according to a file name pattern. The pattern can be specified as part of the CUR- LOPT_URL(3) option, using an fnmatch-like pattern (Shell Pattern Matching) in the last part of URL (file name). By default, libcurl uses its internal wildcard matching implementation. You can provide your own matching function by the CUR- LOPT_FNMATCH_FUNCTION(3) option. A brief introduction of its syntax follows: * - ASTERISK ftp://example.com/some/path/*.txt (for all txt's from the root directory) ? - QUESTION MARK Question mark matches any (exactly one) character. ftp://example.com/some/path/photo?.jpeg [ - BRACKET EXPRESSION The left bracket opens a bracket expression. The question mark and asterisk have no special meaning in a bracket expression. Each bracket expression ends by the right bracket and matches exactly one character. Some examples follow: [a-zA-Z0-9] or [f-gF-G] - character interval [abc] - character enumeration [^abc] or [!abc] - negation [[:name:]] class expression. Supported classes are alnum,lower, space, alpha, digit, print, upper, blank, graph, xdigit. [][-!^] - special case - matches only '-', ']', '[', '!' or '^'. These characters have no special purpose. [[]\] - escape syntax. Matches '[', ']' or ''. Using the rules above, a file name pattern can be constructed: ftp://example.com/some/path/[a-z[:upper:]\].jpeg PROTOCOLS
This feature is only supported for FTP download. EXAMPLE
See https://curl.haxx.se/libcurl/c/ftp-wildcard.html AVAILABILITY
Added in 7.21.0 RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. SEE ALSO
CURLOPT_FNMATCH_FUNCTION(3), CURLOPT_URL(3), libcurl 7.54.0 February 03, 2016 CURLOPT_WILDCARDMATCH(3)