change standard input ?


 
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# 1  
Old 11-27-2008
change standard input ?

Dear...

I have a scrpit that contains multiple read command.... when I run the script I have to enter 3 variables so that I can get the output..
but, I dont want to put those 3 inputs manually every time... I want to make a shell that reads the 3 inputs from a file.

the script name is Script.sh

First variable is 1234
Second is yes
Third is No

I did this but it didnt work.
echo | nawk '{print "1234" "\n" "yes" "\n" "No"}' | Script.sh

If Im able to achieve this I can cronjob this script.

Your help is appreciated.
# 2  
Old 11-27-2008
The files should look like:

Code:
$
$ cat file
123 yes no
$
$
$ cat script.sh
#!/bin/sh

while read var1 var2 var3; do
  echo "$var1"
  echo "$var3"
  echo "$var3"
done < file 
$
$

Regards
# 3  
Old 11-27-2008
Thanks for your response.

This is not what I want, I need the inputs to be entered automatically without the need to enter them from keyboard ( standard input for read command)

after excuting script.sh script, I will be asked to enter 3 variables, I want to to make something that can extract those variables from another file.

I need to put the 3 variables after I excute my script.sh (contains the read commands)

Thanks
# 4  
Old 11-27-2008
To read the values from standard input you can do something like this::

Code:
echo -n "Enter variable 1: "
read var1
echo -n "Enter variable 2: "
read var2

echo "$var1"
echo "$var2"

Have a read of a tutorial/book regarding shell scripting, here you can find some links:

https://www.unix.com/answers-frequent...tutorials.html

Regards
# 5  
Old 11-27-2008
Quote:
Originally Posted by yahyaaa
This is not what I want, I need the inputs to be entered automatically without the need to enter them from keyboard ( standard input for read command)
may be you mean such?
Code:
# cat answears.txt
123
yes
no
# script.sh < answears.txt

context of file answears.txt will send to STDIN of file script.sh
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