Sponsored Content
Homework and Emergencies Homework & Coursework Questions Bash Shell Programming assignment. Post 302543431 by agama on Sunday 31st of July 2011 06:57:42 PM
Old 07-31-2011
Try these commands at the command line and see if they don't help you along a bit:

Code:
stuff="abcdefghi"
echo $stuff | cut -c 2
letter=$(echo $stuff| cut -c 3)
echo "3rd letter is: $letter"

These 2 Users Gave Thanks to agama For This Post:
 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

variable assignment in new shell

Hi, I'm writing a KSH script, and at one point, I have to call a new shell and perform some variable assignments. I noticed that the assignment is not working. Please see two samples below: Command 1: #>ksh "i=2;echo I is $i" Output: #>I is Command 2: #>ksh <<EOF > i=2 > echo I... (7 Replies)
Discussion started by: maverick80
7 Replies

2. Shell Programming and Scripting

shell programming assignment

I have a very tough shell program to do. Here is the assignment: Write a non-interactive script that takes in any number of directory names as arguments and calculates and outputs the total number of blocks of disk space occupied by the ordinary files in all the directories. For example, the... (0 Replies)
Discussion started by: Jake777
0 Replies

3. UNIX for Dummies Questions & Answers

Help with date command in bash shell programming

Doubt #1 I have a program that I want the user to input date. When the user inputs the date, is it able to format it to system date dd-mm-yyy and then echo the value into a text file? Doubt#2 If the above is not going to work, I tried to have the system date appear in the user input field and... (6 Replies)
Discussion started by: frossie
6 Replies

4. Shell Programming and Scripting

CPU assignment bash script

Hi guys, I'm basically looking for some help with a bash script I've written. It's purpose is to assign process to individual CPU cores once that process hits 15% CPU usage or more. If it drops below 15%, it's unassigned again (using taskset). My problem is that I can't think of a way to... (2 Replies)
Discussion started by: mcky
2 Replies

5. Shell Programming and Scripting

Making a bash script and small C program for a homework assignment

Here's the assignment. I'll bold the parts that are rough for me. Unfortunately, that's quite a bit lol. The syntax is, of course, where my issues lie, for the most part. I don't have a lot of programming experience at all :/. I'd post what I've already done, but I'm so lost I really don't know... (1 Reply)
Discussion started by: twk101
1 Replies

6. Shell Programming and Scripting

Chunks of bash shell programming

I am going to provide a chunks of codes that I do not understand. Please help with them in a layman's terms. 1) ${DEBUG:-0} -------------------------------------------------------------------------- 2) print "${1}" ... (7 Replies)
Discussion started by: lg123
7 Replies

7. Shell Programming and Scripting

Bash variable assignment question

Suppose I have a file named Stuff in the same directory as my script. Does the following assign the file Stuff to a variable? Var="Stuff" Why doesn't this just assign the string Stuff? Or rather how would I assign the string Stuff to a variable in this situation? Also, what exactly is... (3 Replies)
Discussion started by: Riker1204
3 Replies

8. Shell Programming and Scripting

Loosing trailing new line in Bash var assignment

I have come across a weird behaviour in bash and would love to get to the bottom of it. If I execute echo -e "\na\nb\nc\n" at the command line, I get: a b c However, if I wrap it in an assignment such as: A="$( echo -e "\na\nb\nc\n" )"then I get a b cIt doesn't show very well,... (4 Replies)
Discussion started by: jamesbor
4 Replies

9. Shell Programming and Scripting

Bash variable assignment failure/unary operator expected

I have a little code block (executing on AIX 7.1) that I cannot understand why the NOTFREE=0 does not appear to be assigned even though it goes through that block. This causes a unary operator issue. #!/bin/bash PLATFORM="AIX" NEEDSPC=3000 set -x if ; then lsvg | grep -v rootvg | while... (6 Replies)
Discussion started by: port43
6 Replies
RANGE(3)								 1								  RANGE(3)

range - Create an array containing a range of elements

SYNOPSIS
array range (mixed $start, mixed $end, [number $step = 1]) DESCRIPTION
Create an array containing a range of elements. PARAMETERS
o $start - First value of the sequence. o $end - The sequence is ended upon reaching the $end value. o $step - If a $step value is given, it will be used as the increment between elements in the sequence. $step should be given as a posi- tive number. If not specified, $step will default to 1. RETURN VALUES
Returns an array of elements from $start to $end, inclusive. EXAMPLES
Example #1 range(3) examples <?php // array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12) foreach (range(0, 12) as $number) { echo $number; } // The step parameter // array(0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100) foreach (range(0, 100, 10) as $number) { echo $number; } // Usage of character sequences // array('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i'); foreach (range('a', 'i') as $letter) { echo $letter; } // array('c', 'b', 'a'); foreach (range('c', 'a') as $letter) { echo $letter; } ?> NOTES
Note Character sequence values are limited to a length of one. If a length greater than one is entered, only the first character is used. SEE ALSO
shuffle(3), array_fill(3), foreach. PHP Documentation Group RANGE(3)
All times are GMT -4. The time now is 08:59 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy