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Top Forums UNIX for Dummies Questions & Answers What's the Diff Between These Two Regexes? Post 302654189 by alister on Monday 11th of June 2012 10:53:20 AM
Old 06-11-2012
Quote:
Originally Posted by sudon't
It even turns out that there are different greps, who behave differently!
If it helps, these days you only need to know grep. egrep is equivalent to grep -E and fgrep is equivalent to grep -F.

Quote:
Originally Posted by sudon't
A lifetime of Mac OS use has not prepared me for unix.
That made me laugh aloud. Thank you. Smilie

Regards,
Alister
This User Gave Thanks to alister For This Post:
 

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RE_COMP(3)						     Linux Programmer's Manual							RE_COMP(3)

NAME
re_comp, re_exec - BSD regex functions SYNOPSIS
#define _REGEX_RE_COMP #include <sys/types.h> #include <regex.h> char *re_comp(char *regex); int re_exec(char *string); DESCRIPTION
re_comp() is used to compile the null-terminated regular expression pointed to by regex. The compiled pattern occupies a static area, the pattern buffer, which is overwritten by subsequent use of re_comp(). If regex is NULL, no operation is performed and the pattern buffer's contents are not altered. re_exec() is used to assess whether the null-terminated string pointed to by string matches the previously compiled regex. RETURN VALUE
re_comp() returns NULL on successful compilation of regex otherwise it returns a pointer to an appropriate error message. re_exec() returns 1 for a successful match, zero for failure. CONFORMING TO
4.3BSD. NOTES
These functions are obsolete; the functions documented in regcomp(3) should be used instead. SEE ALSO
regcomp(3), regex(7), GNU regex manual COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
1995-07-14 RE_COMP(3)
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