Linux text editing software management

GERP command:

grep is a powerful text-search tool that views text files line-by-row, and if a matching pattern is found, all rows containing this pattern are printed, and grep supports regular expressions

1 grep option mode is searched for files:

grep root/etc/passwd

　　　　　　　　　　　　

Ls/var/log/|grep Log # Find files with log under/var/log/| is a pipe character

　　　　　　　　

Gret Common parameters

　　　　　　

-C does not print the contents of matching rows, but prints the number of matching rows grep-c sudo/var/log/secure

　　　　　　　　　　

-I case-insensitive match grep-i onboot/etc/sysconfig/network-scripts/ifcfg-e*

-N Displays the line number of the matched line Grep-n PATH ~/.bash_profile

-V prints rows other than matching rows

Common Regular Expressions:

^ matches the beginning of the string

$ matches the end of a string

. Any single character

. * Any character

^$ Blank Line

About VIM:

Brief introduction:

VI is a highly configurable cross-platform text editor, supporting Linux, Windows, Mac, using it to build, modify files, Vim is the enhanced version of VI, and VI is fully compatible, and 2 are free software

　　　　　　

Vim's design philosophy: command combination, mode switching

VIM installation: Yum install vim

VIM command format: $vim [filename] filename is the file to be edited, and if the file does not exist, a new file is created

Three modes of VIM:

Command mode: Enter the "Vim file name" in the Linux terminal to enter the command mode, but cannot enter the text

Edit mode: Press I in command mode to enter edit mode, you can edit the file, press ESC to return to command mode

Last line mode: Press in command mode: Enter the last line mode, there will be a colon in the lower left corner, at this time can be typed in the last row mode support command and execution, such as: Wq save exit: Q Do not save exit: wq! Force Save exit

Vim edit mode:

　　　　　　

Simple common Command mode:

Vim Command mode:

　　　　　　

Vim last-line mode:

　　　　　　

Vim FAQs:

　　　　　　

Download software to resolve rpm dependencies: Yum:

　　　　　　　　　　

Compile and install:

　　　　　　　　

Compile and install Python3:

　　　　　　　　　

Linux text editing software management