The UNIX and Linux Forums  
Hello and Welcome from United States to the UNIX and Linux Forums! Thank You for Visiting and Joining Our Global Community.

Go Back   The UNIX and Linux Forums > Top Forums > UNIX for Dummies Questions & Answers
.
google unix.com



UNIX for Dummies Questions & Answers If you're not sure where to post a UNIX or Linux question, post it here. All UNIX and Linux newbies welcome !!

More UNIX and Linux Forum Topics You Might Find Helpful
Thread Thread Starter Forum Replies Last Post
getting variable inside awk subin_bala Shell Programming and Scripting 1 06-05-2008 04:21 AM
passing a variable inside a variable to a function KingVikram UNIX for Dummies Questions & Answers 2 01-14-2008 08:28 PM
How to replace variable inside the variable mani_um Shell Programming and Scripting 31 08-09-2007 10:56 PM
variable inside awk '{print $c}' Tártaro Shell Programming and Scripting 3 04-13-2007 08:22 AM
ksh: A part of variable A's name is inside of variable B, how to update A? pa3be Shell Programming and Scripting 4 03-30-2005 11:29 AM

Closed Thread
English Japanese Spanish French German Portuguese Italian Dutch Swedish Russian Norwegian Hungarian Hebrew Danish
 
LinkBack Thread Tools Search this Thread Rate Thread Display Modes
  #1 (permalink)  
Old 02-05-2008
MaestroRage MaestroRage is offline
Registered User
  
 

Join Date: Feb 2008
Posts: 20
Using a variable inside a file to cat another.

I have a question to do and it's somewhat confusing. It says, and I quote

"Create a file called file_1 with three lines of text in it. Create a shell variable called "f_name", assign it the string "file_1". Use the cat command and the variable "f_name" to display the contents of the file "file_1""

Now what I did was I made both files, and in "f_name" I wrote this.

#!/bin/sh
f_name="file_1"
cat $f_name

and this will work. However what I think is the professor wants me to use this shell scripts f_name variable in a cat command without having the script itself do the work.

Is there a way to do this?
  #2 (permalink)  
Old 02-06-2008
jim mcnamara jim mcnamara is online now Forum Staff  
...@...
  
 

Join Date: Feb 2004
Location: NM
Posts: 5,643
This is homework. We don't support homework on this forum.

And, no, your answer is not too far off. Just put those commands in a script.
  #3 (permalink)  
Old 02-06-2008
vbe's Avatar
vbe vbe is offline Forum Staff  
Moderator
  
 

Join Date: Sep 2005
Location: Switzerland - GE
Posts: 1,546
True Jim! This is homework but the poor guy didnt hide the fact, not like other questions Ive seen... And he shown he is trying, so why not help without solving the problem?
As Jim mentionned you are in fact very close...
Where were you asked to write a script?
If you do exactly (One point after another, I counted 3) what is being asked and I know by what you already wrote, you cant go wrong!

All the best
  #4 (permalink)  
Old 02-06-2008
joeyg's Avatar
joeyg joeyg is offline Forum Staff  
modérateur
  
 

Join Date: Dec 2007
Location: Home of 17-time world champion Boston Celtics
Posts: 1,311
Cool Are you missing the first part of the request?

#!/bin/sh
history | tail -3 >file_1
f_name="file_1"
cat $f_name


It appears that the first part of the instructions are to create a file with 3 lines of text. So, need something to generate 3 lines of text. (And there are many other ways to generate random text.)
Sponsored Links
Closed Thread

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 06:50 AM.


Powered by: vBulletin, Copyright ©2000 - 2006, Jelsoft Enterprises Limited. Language translation by Google.
vBCredits v1.4 Copyright ©2007 - 2008, PixelFX Studios
The UNIX and Linux Forums Content Copyright ©1993-2009. All Rights Reserved.Ad Management by RedTyger

Content Relevant URLs by vBSEO 3.2.0