grep -inR "Exception" device_e000* > out.txt
pattern source target
參數說明:
-i, --ignore-case ignore case distinctions
-n, --line-number print line number with output lines
--line-buffered flush output on every line
-R, -r, --recursive equivalent to --directories=recurse
--include=PATTERN files that match PATTERN will be examined
--exclude=PATTERN files that match PATTERN will be skipped.
--exclude-from=FILE files that match PATTERN in FILE will be skipped.
