本文介绍bash脚本中基本的echo命令使用方法及如何创建和调用变量，为bash脚本编程打下坚实基础。
In this part, I introduce the echo command as well as creating variables.
This tutorial is pretty easy,but very important to bash scripting which I will introduce in following tutorials.
1.COMMAND:
echo
DESCRIPTION:
display a line of text
SYNOPSIS:
echo string
Example:
piniheaven@fish:~/Documents$ echo"Hello,优快云"
Hello,优快云
2.Creating variable and calling variable
Example:
piniheaven@fish:~/Documents$ Hello="Hello,优快云" #create variable
piniheaven@fish:~/Documents$ echo$Hello #call variable
Hello,优快云
This tutorial is pretty easy,but very important to bash scripting which I will introduce in following tutorials.
1.COMMAND:echo
DESCRIPTION:
display a line of text
SYNOPSIS:
echo string
Example:piniheaven@fish:~/Documents$ echo"Hello,优快云"
Hello,优快云
2.Creating variable and calling variable
Example:
piniheaven@fish:~/Documents$ Hello="Hello,优快云" #create variable
piniheaven@fish:~/Documents$ echo$Hello #call variable
Hello,优快云
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