Linux-grep/cut/wc/sort__linux

Keyword-based search
grep keyword file parameters:
-I ignores case
-N Displays the results in rows
-V output lines with no keywords
-an the specified number of rows after the line is output at the same time
-BN the specified number of rows before the row is output at the same time
Working with text based on columns
Cut-and
-D Specify Separator
-F Specify column number
-CN1-N2 the N1-N2 column based on character segmentation
Text Statistic command WC
Function: Statistical text information Parameters:
-L Statistic Line count
-W Statistics words
-C Count bytes
-m statistics number of characters
Text sort command Sort parameter:
-R Flashback
-N based on numeric sorting
-F ignores case
-U Delete Duplicate rows
-TC use C as a delimiter to sort columns
-KX Specifies the specified column after split