ch5.txt

平时学习linux总结的命令

Chapter 5

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Read Characters from the Keyboard and
Save Them as a String Variable
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#!/bin/bash
clear
echo " "
echo "Enter Your First Name: "
read FirstName 

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Read a Numeric Value from the Keyboard
and Save It as a Numeric Variable
--------------------------------------
#!/bin/bash
clear
echo " "
echo "Enter Your Age: "
read age 

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Read Both Strings and Numeric Values
from the Keyboard
------------------------------------
#!/bin/bash
clear
echo " "
echo "Enter Your First Name: "
read FirstName 
echo "Enter Your Last Name: "
read LastName 
echo "Enter Your Age: "
read age 

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Prompt for User Name and Personally
Greet The User
-----------------------------------
#!/bin/bash
clear
echo " "
echo "Enter Your First Name: "
read FirstName 
echo "Hello, $FirstName"

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Store A String Value To Another String Variable
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#!/bin/bash
clear

declare FirstName
declare Greeting
echo $Greeting= "Hello,"
echo " "
echo "Enter Your First Name: "
read FirstName
echo "$Greeting $FirstName"

-----------------------------
Displaying a Numeric Variable
-----------------------------
#!/bin/bash
clear
echo " "
echo "Enter Your Age: "
read age 
echo "$age"

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Displaying Numeric and String Variables
---------------------------------------
#!/bin/bash
clear
echo " "
echo "Enter Your First Name: "
read FirstName 
echo "Enter Your Age: "
read age 
echo "$FirstName, $age really isn't that old."

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Saving Data to a File
---------------------
#!/bin/bash
clear
echo " "
echo "Enter Your First Name: "
read FirstName 
echo "Enter Your Last Name: "
read LastName 
echo "$FirstName $LastName" > employees.dat

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Appending Data to a File
------------------------
#!/bin/bash
clear
echo " "
echo "Enter Your First Name: "
read FirstName 
echo "Enter Your Last Name: "
read LastName 
echo "$FirstName $LastName" >> employees.dat

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Displaying Data Contained in a File
-----------------------------------
#!/bin/bash
clear
echo "Employee Data"
echo " "
cat employees.dat