Getting Started with Linux Basics (iii)

1. Look at the type of shell you are using:

[Email protected] ~]# echo $SHELL

/bin/bash

2.SS command:

function: View system listening port (socket)

Options:

-T:TCP protocol

-U:UDP protocol

-N: Resolve service Name

-L: Listening port number

Example:

[Email protected] ~]# SS-TNL

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3.IFCONFIG/IP Addr List command:

Function: View server IP Address

Example:

[Email protected] ~]# ifconfig

[[Email protected] ~]# IP Addr List

650) this.width=650; "src=" Https://s3.51cto.com/wyfs02/M00/8E/1F/wKiom1i2OvzAVy3UAADvHi6ug8E160.png "title=" Ifconfig.png "width=" 740 "height=" 565 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" width:740px;height:565px; "alt=" Wkiom1i2ovzavy3uaadvhi6ug8e160.png "/>

4. Shutdown Command :

CentOS 7:

[Email protected] ~]# Systemctl Poweroff

[Email protected] ~]# Systemctl reboot

Applies to all systems:

[Email protected] ~]# Poweroff

[email protected] ~]# halt

[email protected] ~]# reboot

5.basename/dirname Command :

Basename-strip directory and suffix from filenames

Dirname-strip non-directory suffix from file name

[Email protected] ~]# basename/etc/sysconfig/network-scripts/ifcfg-eno16777736

ifcfg-eno16777736

[Email protected] ~]# dirname/etc/sysconfig/network-scripts/ifcfg-eno16777736

/etc/sysconfig/network-scripts

Subsequent re-writing

This article is from the "Disguised Geek" blog, please be sure to keep this source http://waldenkk.blog.51cto.com/2410270/1902373

Getting Started with Linux Basics (iii)