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Full Discussion: Shell script to accept user input on the fly
Top Forums Shell Programming and Scripting Shell script to accept user input on the fly Post 302817687 by Arun_Linux on Thursday 6th of June 2013 10:15:44 AM
Old 06-06-2013
Lightbulb Shell script to accept user input on the fly
I want a shell script that accepts user input simultaneously when performing other tasks. Example: A shell script should echo some messages on the console and when the user presses some keys it should respond to that action.
say, when user presses the key
A - more information should be printed on the console
M - minimum information should be printed on the console
P - pause the script

How to achieve it ?


Code:
#!/usr/bin/bash

while true
do
  echo "im in infinite loop.."
done

#simultaneously below logic should be handled

  if [ key "A" is pressed ]
  then
      echo "hello you pressed A while infinite loop is running"
   fi

  if [ key "P" is pressed ]
  then
      echo "pausing the script"
   fi

 

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LEARN ABOUT SUNOS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a	Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.10							    30 Jan 2004 							 script(1)
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