This is the command check-regexp that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
check-regexp - test regular expressions from the command line
check-regexp 'regular expression' 'string1' 'string2' ...
check-regexp (GNU Source-highlight)
You simply pass as the first command line argument the regular expression and then the
strings you want to try to match.
It is crucial, in order to avoid shell substitutions, to enclose both the expression and
the strings in single quotes.
The program then prints some information about the possibly successful matching.
In the output the what part represents the whole match, and the what[i] part represents
the i-th marked subexpression that matched.
The program also prints possible prefix and suffix.
This program follows the usual GNU command line syntax, with long options starting with
two dashes (`-'). A summary of options is included below.
Print help and exit
Print version and exit
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