원하는 :
grep -A 5 '19:55' file
에서 man grep
:
Context Line Control
-A NUM, --after-context=NUM
Print NUM lines of trailing context after matching lines.
Places a line containing a gup separator (described under --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 (described under --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
(described under --group-separator) between contiguous groups of matches.
With the -o or --only-matching option, this has no effect and a warning
is given.
--group-separator=SEP
Use SEP as a group separator. By default SEP is double hyphen (--).
--no-group-separator
Use empty string as a group separator.