help me with basics Post: 302607720

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Top Forums UNIX for Dummies Questions & Answers help me with basics Post 302607720 by balajesuri on Thursday 15th of March 2012 06:44:38 AM

03-15-2012

Registered User

If you put few commands in a logical sequence in a file and give it execute permissions, then this file becomes a script.

For e.g., you can write a script to forcefully delete all the log files in a directory and notify the user if removal was a success.

Code:

#! /bin/bash
rm -f /my/dir/*.log
if [ $? -eq 0 ]
then
    echo "All log files removed"
else
    echo "Looks like something happened"
fi

Shell script is a script written for a shell. And the shell could be any, depending on the OS you're working on.

Unix script could mean a script written specifically for any of the shells of Unix.

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LEARN ABOUT OPENSOLARIS

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 5.11							    30 Jan 2004 							 script(1)