Mylinux Cookbook No.3 2015/3/13

Alias aliases

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Alias=tpyedf

LS-LRT time reversal

Ls-d only look at the catalogue

The directory to use

/bin,/sbin,/usr/bin,/usr/sbin the directory of commands, Sbin is the command, binary directory that Superuser root can use, and after compilation

The meaning of Sbin super

/boot

Yum install-y Tree

/boot Linux kernel and the file directory required by the boot system program
/dev Stores external Linux devices
/etc/Configuration file Directory
/home User House Directory command: Useradd
/lib command: LDD
/media,/mnt
/OPT is a directory for some large software or some special software
/proc System Kernel Mapping
Echo 1 >/proc/sys/net/ipv4/icmp_echo_ignore_all
/root Root User home directory
/selinux
/SRV store some data that needs to be extracted after the service is started
/sys
The/sys/class contains all the device types registered in kernel, linked to devices
/sys/dev maintains a list of primary and secondary numbers by character device and block device, linked to device
/sys/device is a global device architecture, containing all the discovered physical devices registered on various buses, a hierarchical representation model of all the devices in the system, and the most important directory structure for/sys file system management devices.
/SYS/FS describes all file systems in the system
/sys/kernel stores all the adjustable parameters in the kernel
/tmp temp file
/USR User program storage directory, similar to the Win Programs Files folder
var stores things that are constantly expanding, and we are accustomed to placing directories that are often modified in this directory. Includes various log files.

Dynamic libraries that are dependent on the Ldd/bin/ls command

CD-Last Catalog

CD ~ Home Directory

Cd. ..

[email protected] etc]# CD. /boot/

Pwd-p-L Logical physical soft connect real path

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Write/etc/profile is permanently active for all users

VI in G to last and then press O next line

CTRL + C Cancel command
CTRL + Z Pause command
CTRL + a cursor to the beginning
Ctrl+e cursor to end of line
Ctrl+u Delete all characters before the cursor
Ctrl+k Delete all characters after cursor
Ctrl+l Clear Screen
Ctrl+d Sign Out = = Exit
Ctrl+s lock Command terminal, press any key will not react
CTRL+Q unlock Command terminal

State-filename, check these times.

Mylinux Cookbook No.3 2015/3/13