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Top Forums UNIX for Dummies Questions & Answers How to pass command line argument in shell script? Post 302848743 by Don Cragun on Friday 30th of August 2013 02:01:31 AM
Old 08-30-2013
Quote:
Originally Posted by Nsharma3006
I have not started yet because I dont know how to start for writing command line argument.

I am searching if I can find the code for the same.

---------- Post updated at 08:37 PM ---------- Previous update was at 04:07 PM ----------

Can anyone help how to write I m new to script writing

---------- Post updated at 09:36 PM ---------- Previous update was at 08:37 PM ----------

I need to run a script like
Code:
./script.ksh 01/02

if I run just like this
Code:
./script.ksh

then It should thru error message like invalid option and exit from the script
You're probably not getting much help here because this sounds more like a homework item placed in the wrong forum and not using the correct format for a homework assignment.

If you really are trying to learn how to write shell programs on your own, we need more details to understand what you're trying to do.

Options are generally introduced by a leading minus sign (or less commonly, a leading plus sign), your example doesn't include either one.

An error message like "invalid option" implies that you are processing options (rather than operands) and that there are "valid" and "invalid" options. What determines whether an option is valid or invalid?
 

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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)
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