grep
The following operations can be performed on "grep":
grep
Searches files or output for lines containing a match to the specified . By default, grep prints the matching lines.
Arguments
c Suppress normal output. Instead print a count of matching lines. With the -v option, count non-matching lines.
E Interpret <pattern> as an extended regular expression.
i Ignore case distinctions.
v Invert the sense of matching, to select non-matching lines.
w Select only those lines containing matches that form whole words.
x Select only those matches that exactly match the whole line.
pattern The pattern (regular expression or text string) for which to search.
Example
show ns info | grep off -i