Home / cs-notes / Operating System / Linux / Commands / grep

• -c, –count
• -i, –ignore-case
• -v, –invert-match
• -m NUM, –max-count=NUM
• -o, –only-matching
• -w, –word-regexp
• -P, –perl-regexp

---

• \ Escape

---

   Context Line Control

       -A NUM, --after-context=NUM
              Print  NUM  lines  of  trailing  context  after  matching lines.
              Places  a  line  containing  a  group  separator  (--)   between
              contiguous  groups  of  matches.  With the -o or --only-matching
              option, this has no effect and a warning is given.

       -B NUM, --before-context=NUM
              Print NUM  lines  of  leading  context  before  matching  lines.
              Places   a  line  containing  a  group  separator  (--)  between
              contiguous groups of matches.  With the  -o  or  --only-matching
              option, this has no effect and a warning is given.

       -C NUM, -NUM, --context=NUM
              Print  NUM  lines of output context.  Places a line containing a
              group separator (--) between contiguous groups of matches.  With
              the  -o  or  --only-matching  option,  this  has no effect and a
              warning is given.

---