Usernames with dots, dashes and underscores. Hostnames limited to 64 chars, dash disallowed at first char of domain segment, only one consecutive dash or dot, one-char domains possible, multi-subdomains, long TLDs.

this simple regexp will find a string between two undercores

Validates following phone number schemes: 1234567 123-45-67 12-34-578 711234567 0711234567...

Tiempo mercados

Line break regex for Catalina.out without timestamps

Matches words (with certain special chars) and one or more spaces in between those words.

поиск номера телефона в тексте

Parsing my work time sheet (doesn't validate times/dates). Options available: 12/17/2015 09:00 - 13:00 12/17/2015 09:00 - 17:00 LUNCH 00:30 12/17/2016 HOLIDAY

This pattern would select the whole image tag

Remove trailing spaces from CSV files

Matches every Character before the ": " characters