Linux basic configuration and Management 3 Linux command line Text processing tools

1 file browsing (Simple review)

1 Cat View the contents of the file

2 more in the form of Page view, but only to page down

3 Less is viewed as a page turn, but can support up and down pages

4 Head default is to view the first 10 lines, but we specify the number of rows to view

5 Tail The default is to view the following 10 lines, but we can specify the number of rows to view

2 keyword-based search

Let's say I created a tmp.cpp in my home directory.

1 command grep searches based on keywords

2 Single keyword search: grep keyword file name

Like I'm searching for Linux in Tmp.cpp.

More than 3 keyword search: grep-e keywords | keywords ... Filename

Like I'm searching in the Tmp.cpp. Contains Linux and test

4 Other parameters for grep

1-i is ignore case

2-n is the line where the result is displayed

3-v is the output of a line without a keyword (equals reverse)

4-ax is the output that contains the result of the row x row after

5-BX is the output of the time contains the result of the row x row before