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Full Discussion: How to use a function?
Top Forums UNIX for Dummies Questions & Answers How to use a function? Post 302731349 by Vitaly on Wednesday 14th of November 2012 09:11:30 PM
Old 11-14-2012
How to use a function?
I am trying to use a function in my script. I'm not quite sure how to complete it. This is my assignment:

The first version of hw12.sh should display the usage message "usage: $0 argument", "Enter one or more arguments." when no arguments are on the command line.

$ hw12.sh
usage: hw12.sh argument
Enter one or more arguments.

- The second version of hw12.sh should display the message "There were $# arguments on the command line" if there were 1 or more arguments on the command line. Here is an example.

$ hw12.sh abc 123
There were 2 arguments on the command line.

- The final version of hw12.sh has the following change. Display the usage message from a function. Here is an example.

$ hw12.sh hello hw12.sh
There were 2 arguments on the command line.
$ hw12.sh
usage: hw12.sh argument
Enter one or more arguments.

This is my code that wrote but it says i have a syntax error any help would be appreciated. Thank you

Code:
if [ $# -eq 0 ]
then echo "usage: $0 argument"
     echo "Enter 1 or more arguments"
     else "There were $# arguments on the command line"
     exit 1
fi

Last edited by Scrutinizer; 11-15-2012 at 01:57 AM.. Reason: code tags
 

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LEARN ABOUT DEBIAN

seqdiag

SEQDIAG(1)						      General Commands Manual							SEQDIAG(1)

NAME

       seqdiag - generate sequence-diagram image file from spec-text file.

SYNOPSIS

       seqdiag [options] file

DESCRIPTION

       This manual page documents briefly the seqdiag commands.

       seqdiag is generate sequence-diagram image file from spec-text file.

OPTIONS

       These  programs	follow	the  usual  GNU  command  line	syntax, with long options starting with two dashes (`-').  A summary of options is
       included below.	For a complete description, see the Info files.

       --version
	      show program's version number and exit

       -h, --help
	      show this help message and exit

       -a, --antialias
	      Pass diagram image to anti-alias filter

       -c FILE, --config=FILE
	      read configurations from FILE

       -o FILE
	      write diagram to FILE

       -f FONT, --font=FONT
	      use FONT to draw diagram

       -T TYPE
	      Output diagram as TYPE format

SEE ALSO


       The programs are documented fully by
       http://tk0miya.bitbucket.org/seqdiag/build/html/index.html

AUTHOR

       seqdiag was written by Takeshi Komiya <i.tkomiya@gmail.com>

       This manual page was written by Kouhei Maeda <mkouhei@palmtb.net>, for the Debian project (and may be used by others).

								   May 21, 2011 							SEQDIAG(1)
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