Google Search Regex(Google Hacking)

Well, they are not really the same regex as we can use on Linux or programming. But some of the “tags” are pretty good and can help you on a lot of searches.

Basic
– “+” – Result must contain word
– “-” – Result must not contain word
– “OR” and “|” – Applied between two words, it will find “this or that”, or both. The “OR” operator must be uppercase and have a space between the 2 words on each side. The “|” operator does not need a space between the words
– ” “” ” – Finds an exact match of the word or phrase
– “~” – Looks for synonyms or similar items. Eg: “~run” will match runner’s and marathon
– “..” – Indicates that there’s a range between number. Eg: 100..200 or $100..$200
– “*” – Matches a word or more. Eg: “Advanced * Form” finds “Advanced Search Form”
– “word-word” – All forms (spelled, singe word, phrase and hyphenated

Important
– “site:” – Search only one website or domain. Eg: “PC site:wazem.org” will find PC within wazem.org
– “filetype:” or “ext:” – Search for docs in the file type. Eg: “Linux tutorial filetype:pdf” will find Linux tutorial in the pdf format
– “link:” – Find linked pages (pages that point to the URL)
– “define:” – Provides definition for a word or a phrase
– “cache:” – Display Google’s cached version of a web page.
– “info:” – Info about a page
– “related:” – Websites related to the URL
– “allinurl:” – All words must be in the URL
– “allintitle:” – All words must be in the title of the page
– “intittle:” – Match words in the title of the page
– “source:” – News articles from a specific source

Calculations
– “+ – * /” – Normal math signs. Eg: 12 * 4 + 2 – 1 /2
– “% of” – Percentage. Eg:10% of 100
– “^” or “**” – Raise to a power
– units “in” units – Convert Units (currency, measurements, weight). Eg: 300 lbs in Kg, 40 in hex

Others
– “book” or “books” – Search books. Eg: book “LPI Linux Certification in a Nutshell”