02-13-2003
Grep problem
Folks,
I need to resolve a problem I'm having with the grep command.
The solution I currently have is:
grep -Ei ' fail | error '
But the problem with this command is that, it doesn't catch strings like failed, failure, failing, etc.
So my question is what's the best way to implement one single grep command to search for all instances of fail and error.
Another spin to this is that, each instant of the fail string comes along with the word Section, while the error keyword does not. I need to capture all instances of fail, failed, failure within the section and all instances of Error.
Any idea on this? Thanks in advance.
Odogbolu98
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LEARN ABOUT ULTRIX
re_exec
regex(3) Library Functions Manual regex(3)
Name
re_comp, re_exec - regular expression handler
Syntax
char *re_comp(s)
char *s;
re_exec(s)
char *s;
Description
The subroutine compiles a string into an internal form suitable for pattern matching. The subroutine checks the argument string against
the last string passed to
The subroutine returns 0 if the string s was compiled successfully; otherwise a string containing an error message is returned. If is
passed 0 or a null string, it returns without changing the currently compiled regular expression.
The subroutine returns 1 if the string s matches the last compiled regular expression, 0 if the string s failed to match the last compiled
regular expression, and -1 if the compiled regular expression was invalid (indicating an internal error).
The strings passed to both and may have trailing or embedded newline characters; they are terminated by nulls. The regular expressions
recognized are described in the manual entry for given the above difference.
Diagnostics
The subroutine returns -1 for an internal error.
The subroutine returns one of the following strings if an error occurs:
No previous regular expression
Regular expression too long
unmatched (
missing ]
too many () pairs
unmatched )
See Also
ed(1), ex(1), egrep(1), fgrep(1), grep(1)
regex(3)