Search file(s) for lines that match an extended expression (extended grep)
Syntax
egrep [ options ] 'PATTERN' files ...
egrep is the same as `grep -E'
all other options are the same as grep
The PATTERN is a regexp. In typical usage, the regexp is quoted to
prevent the shell from expanding any of the special characters as file
name wildcards. Normally, `egrep' prints the lines that matched.
If
multiple file names are provided on the command line, each output line
is preceded by the name of the file and a colon.
OPTIONS
-c
Print out a count of the lines that matched the pattern, instead
of the lines themselves.
-s
Be silent. No output is produced, and the exit value indicates
whether or not the pattern was matched.
-v
Invert the sense of the test. `egrep' prints the lines that do
*not* match the pattern, and exits successfully if the pattern was
not matched.
-i
Ignore case distinctions in both the pattern and the input data.
-l
Only print the names of the files that matched, not the lines that
matched.
-e PATTERN
Use PATTERN as the regexp to match. The purpose of the `-e'
option is to allow patterns that start with a `-'.
“I've never had a humble opinion in my life. If you're going to have one, why bother to be humble about it” ~ Joan Baez
Related:
fgrep - Search file(s) for lines that match a fixed
string
gawk - Find and Replace text within file(s)
grep - Search file(s) for lines that match a given pattern
Equivalent Windows commands: FINDSTR - Search for strings in files