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Need Urgent help
Joined: 16 Jun 2004
Posts: 1
Need Urgent help
Hi friends,
can anyone help me do the following project, if anyone have already
done , please do help me.
Project 1 - Small Shell
Create a simple restricted shell:
A shell in the command line interpreter for an operating system. It
gives direct access to the underlying resources.
1) Provides Login for the user:
Use a simple password protection system
All user files are in your file system
Each user has their own directory structure ( that you will create
when they first login )
They will have only one directory to start and it will bear there
login name.
2) You must support the following commands:
File system commands
ls - list files (argument -l and -a must be supported)
cd - change directory
mkdir - make directory
rename - rename file
File Content Manipulation
cat file - Prints the file to the screen
edit - invokes an editor
perl file - runs a file with perl instructions
sort file - sorts the file and sends the results to the screen (-f -
d and -n)
match - prints lines of file that match regular expression
Piping and redirection
Create the concept of number pipes |1 |2 |3... up to three (more if
you want)
Uses the pipe to redirect input to other programs or to files
ls -1 |1| sort |2> sorted_file |1> unsorted_file
The first time a numbered pipe is created determines the content of
the pipe then the ending
Setting shell parameters
set $parameter = "value"
echo $parameter
edit $parameter - Tests whether the file name exists or creates a
new one if it does not.
Joined: 16 Jun 2004
Posts: 9
Need Urgent help
<g> - isn`t this called "unix" ...? :=0
On 6/15/04 3:50 PM, aarthisoft at aarthisoft@... wrote:
> Hi friends,
> can anyone help me do the following project, if anyone have already
> done , please do help me.
>
> Project 1 - Small Shell
> Create a simple restricted shell:
>
> A shell in the command line interpreter for an operating system. It
> gives direct access to the underlying resources.
>
> 1) Provides Login for the user:
>
> Use a simple password protection system
> All user files are in your file system
> Each user has their own directory structure ( that you will create
> when they first login )
> They will have only one directory to start and it will bear there
> login name.
> 2) You must support the following commands:
>
> File system commands
> ls - list files (argument -l and -a must be supported)
> cd - change directory
> mkdir - make directory
> rename - rename file
> File Content Manipulation
> cat file - Prints the file to the screen
> edit - invokes an editor
> perl file - runs a file with perl instructions
> sort file - sorts the file and sends the results to the screen (-f -
> d and -n)
> match - prints lines of file that match regular expression
> Piping and redirection
> Create the concept of number pipes |1 |2 |3... up to three (more if
> you want)
> Uses the pipe to redirect input to other programs or to files
> ls -1 |1| sort |2> sorted_file |1> unsorted_file
> The first time a numbered pipe is created determines the content of
> the pipe then the ending
> Setting shell parameters
> set $parameter = "value"
> echo $parameter
> edit $parameter - Tests whether the file name exists or creates a
> new one if it does not.
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
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