Shell Learning Notes

First, Shell discussion

Second, the script execution mode

Create and open a shell script

Vim Hello. SH

Edit

#!/bin/Bash
#-E allows echo to support Shell escape character echo"\e[1;34m First shell script \e[0m"

Run

#赋予权限, running (common) chmod 755 Hello. SH . /hello. SH #直接运行bash hello. SH

Iii. Basic functions of Bash

1. Command aliases and shortcut keys

View all command aliases in the system

Alias

Set alias (restart disabled)

' Original Command '

Set the alias to Permanent

Vim ~/.BASHRC

Shell Learning Notes