bc,getopt and arrays in bash


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting bc,getopt and arrays in bash
# 1  
Old 11-24-2011
bc,getopt and arrays in bash

trying to sum elements in an array using bc and getopt,i have a file with names and thier vaules if the names appears 3 times i should multiply its value with 3 then find the sum of all the elements together

Code:
cat foo.txt
 
max 2.3 
henry 3
fransis 4.5
max 2.3
henry 3
max 2.3

it should show on the terminal
Code:
max 6.9
henry 6 
fransis 4.5


and so on

---------- Post updated at 01:04 AM ---------- Previous update was at 01:03 AM ----------

im trying not to use awk

Last edited by radoulov; 11-24-2011 at 05:58 PM.. Reason: Code tags!
# 2  
Old 11-24-2011
Quote:
Originally Posted by elginmulizwa
[...]
im trying not to use awk

Why?
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Compare bash arrays issue

Hello everyone, I need help comparing 2 arrays. the first array is static; the second array is not .. array1=( "macOS Mojave" "iTunes" ) cd /Volumes array2=( * ) # output of array2 macOS Mojave iTunes Mac me The problem occurs when I compare the arrays with the following code - ... (6 Replies)
Discussion started by: trexthurman
6 Replies

2. Shell Programming and Scripting

Using arrays in bash using strings to bash built-in true

I have the following code and for some reason when I call the program using /home/tcdata/tatsh/trunk/hstmy/bin/bash/raytrac.bash --cmod=jcdint.cmod I get hasArgument = hasArgument = true Somehow the array element is returning even though I have not chosen the option. ... (41 Replies)
Discussion started by: kristinu
41 Replies

3. Shell Programming and Scripting

Yet another bash arrays question

Hi all, I have a file that contains many lines, but only a few are of my interest, so I'm cutting it with grep + awk, and the result I get is for example line 0 line 1 line 2 line 3 line n Now I want to store each line in an array "cell" so I can use it later calling to ${array},... (2 Replies)
Discussion started by: TuxSax
2 Replies

4. Shell Programming and Scripting

subtraction in bash arrays

hi i am using bash shell to perform some subraction. here is what i have: i have a while loop and am using i as a counter. diff= `expr ${ARRAY1} - ${ARRAY2}` for example array1 has -0.7145 and array2 has -0.7041. when i try the above command, i get expr: non-numeric argument. any... (6 Replies)
Discussion started by: npatwardhan
6 Replies

5. Shell Programming and Scripting

arrays and while loops in bash

hi guys, i have an array called ARRAY which has elements in it... i am trying to assign elements of ARRAY to master_array.. i get a =: command not found error.. i=0 while do ${master_array}=${ARRAY} ((i++)) done is there something i am missing? (4 Replies)
Discussion started by: npatwardhan
4 Replies

6. Shell Programming and Scripting

arrays in bash

hi guys, i have the following script and when i run it i get blank lines on the screen.. i am trying to display the contents of array var.. #!/usr/bin/bash var=`awk 'NR>20&&NR<31' try.sum | awk '{print $4}'` echo "${var}" (1 Reply)
Discussion started by: npatwardhan
1 Replies

7. Shell Programming and Scripting

Searching Bash Arrays

Hi, I am writing a bash shell script. I would like to execute a statement only if an array contains a specific value. For example: array=(1 3 5 7) I would like to execute the statement only if the value 3 is present in ${array}. Thanks for any help, Mike (1 Reply)
Discussion started by: msb65
1 Replies

8. Shell Programming and Scripting

Arrays in bash.need help

:confused: Is it possible to delete array elements dynamically.For instance,consider an array( a b c d ) ,now can i delete array (the third element 'c').So that the array becomes array(a b d).. Thanks in advance!! (1 Reply)
Discussion started by: tj23
1 Replies

9. Shell Programming and Scripting

comparing two arrays or strings in bash

Hi there, im having issue with comparing two variables, in a bash script. im trying to do the following: - get a word from user 1 - split the word into array - get a character from user2 trying to compare the character entered by user 2 with every single character in the array... (2 Replies)
Discussion started by: new2Linux
2 Replies

10. UNIX for Dummies Questions & Answers

bash: setting arrays

Ok, I searched the threads a couple of times but couldn't find anything really relevant. Here's my problem, maybe you can help: I am running version 1.14.7 of the bash shell, on Red Hat Linux. I am trying to set an array like so: bash$> letters=(x y z) spaces are between the letters but... (3 Replies)
Discussion started by: Kriton
3 Replies
Login or Register to Ask a Question