Visit Our UNIX and Linux User Community

Full Discussion: Shift array element
Top Forums Shell Programming and Scripting Shift array element Post 302318926 by Rhije on Friday 22nd of May 2009 06:00:39 PM
Old 05-22-2009
"unset" is what you are looking for.
Code:
unset arr[3]

My code sample follows:

Code:
#!/bin/bash

example[1]="one"
example[2]="two"
example[3]="three"
example[4]="four"
example[5]="five"

echo "A simple list, iterate over it to show elements"

for i in "${example[@]}"; do
        echo $i;
done;

echo "Unsetting 3rd element of array with: unset example[3]"
unset example[3]

echo
echo "Iterate over the modified list."

for i in "${example[@]}"; do
        echo $i;
done;

And then I tested it

Code:
-bash-3.00$ ./test.sh
A simple list, iterate over it to show elements
one
two
three
four
five
Unsetting 3rd element of array with: unset example[3]

Iterate over the modified list.
one
two
four
five

 
Test Your Knowledge in Computers #502
Difficulty: Medium
If a function uses a particular process or algorithm such as a Fast Fourier Transform to perform an operation, it would not be appropriate to document it in a series of comments in the source code.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

accessing my first element of array

Hello everyonel, I have an array set like so num=4 read name arr=name I go through while loop to assign different values to different array element from 1 to 4. when I try to access the FIRST element of the array I get the last one first. Like if I say ${arr} it will show the last element... (4 Replies)
Discussion started by: afadaghi
4 Replies

2. Shell Programming and Scripting

Remove an element from an array in PERL

Hello guys, I have the following question. Consider the following code in PERL for($xeAnumber=0; $xeAnumber<@xeAnumber; $xeAnumber++) { if(@xeAnumber==@final_file) { @final_file=@xeTimeStamp; }... (3 Replies)
Discussion started by: chriss_58
3 Replies

3. Shell Programming and Scripting

HELP unsetting array element in loop

I have a loop and I need to be able to unset the array element that I am currently accessing in it. I was thinking of making a counter that increments with the loop and doing unset $dirs but if I do that I am not sure if the other members of the array would get shifted down in index (meaning that... (2 Replies)
Discussion started by: msf5042
2 Replies

4. Shell Programming and Scripting

Help! Yet another check element in array Question

Greetings, DISCLAIMER: My shell scripting is rusty so my question may be borderline stupid. You've been warned. I need to create a script that a) lists the content of zip files in a directory and b) sends out an `exception` report. My ZIP files contain a control file (for load check). I want... (2 Replies)
Discussion started by: alan
2 Replies

5. Shell Programming and Scripting

remove an element from array

I need to remove an element from the below array variable TABLENAME. #!/bin/ksh set -A TABLENAME "mirf roxar keke mirs" echo "the array is ${TABLENAME}" If i need to remove say keke and have the final TABLENAME as below, how this could be achieved. Pls throw some light. echo "Modified... (3 Replies)
Discussion started by: michaelrozar17
3 Replies

6. Emergency UNIX and Linux Support

Assigning zero to element of ksh array.

set -A matched #find referenced files. for i in ${file_names_html} do counter_j=0 for j in ${file_names_minus_index} do match=`cat $i | grep... (1 Reply)
Discussion started by: robin_simple
1 Replies

7. Shell Programming and Scripting

Multiplying array element

I am trying to take all the elements of an array and multiply them by 2, and then copy them to a new array. Here is what I have i=0 for true in DMGLIST do let DMGSIZES2="${DMGSIZES}"*2 let i++ done unset i echo ${DMGSIZES2} It does the calculation correctly for the first element,... (7 Replies)
Discussion started by: nextyoyoma
7 Replies

8. Shell Programming and Scripting

Not able to call an element from an array in ksh

Hi, I have: # Initialize variables #!/usr/bin/ksh FILENM=$1 INDEX=0 # read filename echo "You are working with the Config file: $FILENM" while read line do echo $line data=$line ((INDEX=INDEX+1)) done <"$FILENM" (3 Replies)
Discussion started by: Marc G
3 Replies

9. UNIX for Advanced & Expert Users

Array Element

This question is for someone that's more familiar with Array Element. I need to know if the maximum array element that can be assigned is 1024 and if its so, Is there a workaround solution when the counter exceeded 1024? param_array="$param_nam" counter=$counter+1 #to avoid space... (3 Replies)
Discussion started by: cumeh1624
3 Replies

10. Shell Programming and Scripting

If test array element multiplication

Ya, I know, who in this day and age is mirroring rootvg...? But yes, my shop does and I need to script checking for it. I also know I could just inverse the the logic and call the LV mirrored if the LPs and PPs were not equal. But I want to do the math in the if test and also know I could... (5 Replies)
Discussion started by: gtsonoma
5 Replies
ARRAY_POP(3)								 1							      ARRAY_POP(3)

array_pop - Pop the element off the end of array

SYNOPSIS
mixed array_pop (array &$array) DESCRIPTION
array_pop(3) pops and returns the last value of the $array, shortening the $array by one element. Note This function will reset(3) the array pointer of the input array after use. PARAMETERS
o $array - The array to get the value from. RETURN VALUES
Returns the last value of $array. If $array is empty (or is not an array), NULL will be returned. ERRORS
/EXCEPTIONS This function will produce an error of level E_WARNING when called on a non-array. EXAMPLES
Example #1 array_pop(3) example <?php $stack = array("orange", "banana", "apple", "raspberry"); $fruit = array_pop($stack); print_r($stack); ?> After this, $stack will have only 3 elements: Array ( [0] => orange [1] => banana [2] => apple ) and raspberry will be assigned to $fruit. SEE ALSO
array_push(3), array_shift(3), array_unshift(3). PHP Documentation Group ARRAY_POP(3)

Featured Tech Videos

All times are GMT -4. The time now is 03:54 PM.
Unix & Linux Forums Content Copyright 1993-2021. All Rights Reserved.
Privacy Policy