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Top Forums UNIX for Dummies Questions & Answers Hello Everyone - Student in Need of Help Post 302113597 by Hexum311 on Saturday 7th of April 2007 03:07:14 PM
Old 04-07-2007
Hello Everyone - Student in Need of Help

Hi everyone.

Let me just start off by saying I'm a college student and I love playing around with UNIX.

I registered here because I have a UNIX shell scripting class and I am having some issues with my homework. I'm not looking for answers to the problems, just some help to get me on my way.

Here is an example of one of the problems I'm having an issue with.

Quote:
Write a shell script called suffix that will do the following:

1. Insert a reference to the Bourne shell as the command interpreter of this shell script.
2. Add the appropriate comments
3. Test that exactly two command line argruments are enter from the command line. If not, display the usage message and stop the script and set the status to 1. If exactly two are entered, continue processing.
4. The first argument is the name of an existing file. The second agrument is a suffix to be added to the file when you rename it.
5. Rename the first file to the second file name with the suffix append on.
6. Cut and paste you program in the space provided along with a session of the samples being executed.

For example,

$ suffix memo1 .sv

should rename the file called memo1 to a file called memo1.sv

========

$ suffix memo1

Usage: suffix filename suffixname

========

$ suffix memo1 memo2 .sv

Usage: suffix filename suffixname
My main issue is that I don't know the syntax to cut and paste and redirect the output in such a way that it renames the file and everything.

If you guys can help me with the commands I'll need to make this script, I would greatly appreciate it.
 

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CDPLAY(1)						      General Commands Manual							 CDPLAY(1)

NAME
cdplay - play audio compact disks SYNOPSIS
cdplay [ -a]|[-r] DESCRIPTION
Cdplay is an audio-cdplayer it can be used interactively or non-interactively. With no flags cdplay is used interactively. When used inter- actively cdplay can be either in non-playing or playing mode. In non-playing mode you can select tracks to be played. In playing mode cdplay shows the track-time, remaining track-time, total-time and remaining total-time. Cdplay assumes the drive to be at /dev/cd0. During non-playing mode the following commands are available: cursor-up/down browse through the track-list spacebar add track to the play-list backspace remove a track from the play-list s start playing the tracks in the play-list. When the play-list is empty start playing from the current position in the track-list until the end of the cd p play the track on the current position in the track-list r play all tracks in a random order (shuffle play) e exit cdplay During playing mode the following commands are available: s stop playing, return to non-playing mode spacebar pause/resume current track cursor-up/down skip to next/previous track OPTIONS
When one of these options is used cdplay does everything in the background. -a Play all tracks, cdplay tells the drive to play all tracks and then it immediately returns to the user -r Play all tracks in random order (shuffle play). Cdplay forks of a new process which starts up a track, during that track it sleeps. When the track is finished it wakes up to start the next track and goes to sleep again. The parent process immediately returns to the user. BUGS
Cdplay does not sense if a cd has changed, so don't switch cd's. If you want to play another cd you have to insert the new cd and start cdplay again. AUTHOR
Michel R. Prevenier (mrpreve@cs.vu.nl) CDPLAY(1)
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