A array is the simplest data-structure for storing items in continuously memory

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Why does the printf statement in this loop output the array out of sequence?

When I execute the following code, the output of the printf statement appears to show array out of sequence. In the declare statement the Source item is declared before Destination and in the output ...
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40 views

Delete last character of last item in a bash array

I have such array: Array={123},{456} Now I want to delete the last item 6.
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1answer
17 views

Compare two Arrays in KSH and output the difference

I am not extremely familiar with KSH (Actually just started using it) and I am having problems with trying to create a script that will essentially compare two arrays that have been stored and then ...
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1answer
27 views

Insert variable value as element in array

If I have a variable that has a value stored and I want to place that value into an array using the name of the variable, how would I do this? e.g.: variable="Hello there" array[0]=$variable does ...
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3answers
42 views

Use a variable as part of name of an array name?

I essentially have a for loop where the variable i that I am iterating with will take on each letter of the alphabet, for example. I want to use each value of i to create an array called "$i"array ...
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1answer
23 views

For value falls within a range get corresponding value

I am thinking to use awk to search a value from input file in a reference file and get a corresponding value from reference file. Both reference and input files can be sorted based on $3 and $2 ...
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2answers
53 views

parse one field from an JSON array into bash array

I have a JSON output that contains a list of objects stored in a variable. (I may not be phrasing that right) [ { "item1": "value1", "item2": "value2", "sub items": [ { ...
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3answers
96 views

How do I test if an item is in a bash array?

Help for a simple script #!/bin/bash array1=( prova1 prova2 slack64 ) a="slack64" b="ab" if [ $a = $b ] then echo "$a = $b : a is equal to b" else echo "$a = $b: a is not equal to b" ...
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2answers
97 views

Create arrays with brace expansion in loop

I would like to generate a number of arrays that differ only by year. In the loop, I create the arrays with brace expansion and a variable. I tried the following code without success: ...
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33 views

Generate array of strings combined with number

I would like to generate a local array in a shell/bash script that consists of the following elements: JF-1998, JF-1999, JF-2000,... , JF-2011. That is, a string JF- combined with the years from 1998 ...
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1answer
90 views

awk array using number as value did not work

I have a reference file: Refrence File Dpse\GA30012 FBgn0000447 chr2 26607738 26607962 -1 Dpse\GA19764 FBgn0085819 chrX 28571020 28571736 -1 Dpse\ttk FBgn0000100 chr2 ...
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65 views

How can I store each seperate entire line in a text file into an array?

I have a file called "threewords". It contains the information: \#gray speedy bee gr-A | sp-E-d-E | b-E \#gray greedy pea gr-A | gr-E-d-E | p-E When I run the command: cat threewords | grep ^# ...
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2answers
48 views

for loop not working for multiple lines

I have a array like this "Apple Banana Clementine Date" I have to print like this: 1. Apple 2. Banana 3. Clementine 4. Date Script file: for i in "${fruits[@]}"; do echo "$lineno. $i " ...
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0answers
39 views

awk - how does the for loop work when counting words? [duplicate]

I have got the following awk script from here that counts the frequency of the words in a file-: # Print list of word frequencies { for (i = 1; i <= NF; i++) freq[$i]++ } END { ...
2
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1answer
49 views

Bash Array Comparision

Within a bash script, I am building two dynamic arrays. And I want to construct another array with difference of two. Example: array1=("aa-1234|safsf|sfsfs" "aa-2345|sfsfs|n0sfm" ...
3
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3answers
162 views

Split in awk not not printing array values

I have a string tstArr2 which has the following content '3 5 8' Now in awk I want to parse a flat file test my array which array is better array INDIA USA SA NZ AUS ARG GER BRA US AUS INDIA ENG ...
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0answers
41 views

How to force bash to start at index 0 with select output?

Well, even some less-experienced bash users would know meanwhile about the fact that bash arrays would always start with index 0. However, select will always do its own thing, as the following example ...
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2answers
42 views

Randomize arguments ( that hold color codes) from an array

I have the array (shown below) with arguments that hold color codes. The intended purpose of my script is to randomize those arguments when the user inputs "scriptname randoms Text" so that every time ...
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5answers
183 views

How to create an array of unique elements from a string/array in bash?

If I have a string "1 2 3 2 1" - or an array [1,2,3,2,1] - how can I select the unique values, i.e. "1 2 3 2 1" produces "1 2 3" or [1,2,3,2,1] produces [1,2,3] Similar to uniq but uniq seems ...
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2answers
65 views

How to select unique array values?

I have an array and I want to get the unique 2nd members bash doesn't really have 2-dimensional array so I've defined it this way, using :: as the separator of the two elements: ruby_versions=( ...
5
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1answer
187 views

Provide two arguments to one option using getopts

In below code when I give option r then getopts requires one arguments: while getopts ":hr::l:" opt; do case $opt in r ) echo "Run Numbers - argument = $OPTARG " ;; l ) echo ...
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1answer
147 views

Trying to access environment variable (array) declared in ~/.profile from shell script

I'm currently fighting with this problem. I've already read some older posts here on SE, and got the conclusion that the only sane way to put a variable (even an array) is ~/.profile. So OK, array ...
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4answers
169 views

How to split text file into records by first non-blank charecter using awk and print only records containing string

I have a text file with information separated in blocks. I would like to separate these blocks into records so that I can handle them separately. This is my text file (file.txt): Alarm Stats: ...
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1answer
66 views

Zsh script how to concatanate array elements with string

I have written a zsh script to automize an analysis in high energy physics and now I would like to use an element of the one of the defined array some string and another element of some another array ...
0
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1answer
44 views

Cannot access elements of an array in zsh

I am trying to write a script in zsh and I need to make use of arrays in order to achieve my aim in an elegant way. After reading some information over the Net, I tried to implement and access the ...
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3answers
359 views

Bad substitution error in zsh shell

Hi in my previous question I got clarity on how to use associative arrays in zsh shell. But whenever I trigger the following command in my script for KEY in ${!array[@]} to iterate amongst the keys ...
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1answer
135 views

typeset -A is giving error in script

I was using associative arrays in my script, hence I used to declare them by the typeset -A <array_name> command, and it worked fine in the bash prompt But when I use it in my script, I get ...
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2answers
88 views

Memory allocation for sparse array in awk

I have searched but didnt reach to any conclusion that when i defined an sparse array does it reserve all the contiguous memory upto maximum index or it allocate the memory at that particular index ...
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1answer
84 views

How do I add an associative array to a variable from an external ini file?

I'm modifying a simple script to add function and learn more about how to write bash scripts. Currently, the script creates associative arrays using a function: declare -A site theme add_site() { ...
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3answers
329 views

store the command output in an array and print one by one

This is my command: cat httpd.conf | grep ^LogFormat | awk -F\" '{print $(NF)}' Output of this: commonsess common or can be any number of values, I need to store these values in an array and ...
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2answers
4k views

mdadm raid doesn't mount

I have a raid array defined in /etc/mdadm.conf like this: ARRAY /dev/md0 devices=/dev/sdb6,/dev/sdc6 ARRAY /dev/md1 devices=/dev/sdb7,/dev/sdc7 but when I try to mount them, I get this: # mount ...
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671 views

Delete an array in awk

In awk, I can clear an array with a loop, making it an empty array, which is equivalent to deleting it. for (key in array) delete array[key]; Is there a simpler way? Can I completely delete an ...
1
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1answer
158 views

How can I use global variable arrays in aliases or functions

I am attempting to simplify repetitive work procedures. In doing so, I am trying to write a .bashrc script which will set global path variables that aliases can refer to. Disclaimer: I'm new to linux ...
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4answers
166 views

Indirection on a Bash array

Is there a possibility to write the following script without the loop? IPv4_first=1.1.1.1 IPv4_second=2.2.2.2 IPv4_third=3.3.3.3 IPv4_all=() for var in ${!IPv4_@} do IPv4_all+=(${!var}) done ...
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2answers
537 views

sh + how to use array in sh script in order to print all values in array

I want to use arrays in my sh script. My target is to create an array with the values a b c and print all values in the array. I succeeded to print each array, but I failed to print all values in ...
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4answers
903 views

How to initialize an array using awk and bash?

I am trying to store values of the first line of a text file into an array. Here is what I have so far: arr_values=() awk ' NR==1 { for (i=0; i<=NF; i++) ...
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2answers
3k views

Array in unix Bourne Shell

I am trying to implement array in Bourne shell (/bin/sh). I found that way to initialize array elements is: arr=(1 2 3) But it is encountering an error: syntax error at line 8: `arr=' unexpected ...
1
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1answer
52 views

Bash array declared in a function is not available outside the function

on bash (v4.3.11) terminal type this: function FUNCtst() { declare -A astr; astr=([a]="1k" [b]="2k" ); declare -p astr; };FUNCtst;declare -p astr (same thing below, just to be easier to read here) ...
4
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1answer
121 views

What is the difference between @ and * when referencing bash array values?

This Bash guide says: If the index number is @ or *, all members of an array are referenced. When I do this: LIST=(1 2 3) for i in "${LIST[@]}"; do echo "example.$i " done Gives: example.1 ...
0
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1answer
868 views

How to do array addition multiplication program in a shell script? [closed]

Write a program arr_calc to perform array addition and array multiplication, The program takes 4 arguments: Argument 1: The file name of the input array A Argument 2: The file name of the input array ...
0
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2answers
437 views

Using regex in for loop

I'm looking to loop through a directory of files and match them with regex, then subsitute the appropriate character: #somefile.txt %somefile.txt >somefile.txt # arr=(\% \> \#) ;for f in *; do ...
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1answer
58 views

Error when constructing an associative array

I am trying to construct an associative array in bash #!/bin/bash declare -A hero_escore hero_escore=( "Invoker_Anti-Mage : -44" "Tinker_Nyx Assassin : 32" "Troll Warlord_Drow Ranger : ...
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2answers
615 views

Creating an array with IFS set to a different value

I am trying to construct an array and write to a file in this format, i.e. the file's content should be something like this hero_pairscore=( askdjfh sdf,sdlkfj lksf,dfgdf,dsflkgj,asdlkf ....) Where ...
0
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2answers
145 views

Reversing 1-D array

I'm trying to reverse a 1-D array which contains a list of files. I followed http://stackoverflow.com/questions/13360091/how-to-reverse-array-in-bash-onliner-for-loop to be the code. But this is not ...
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2answers
827 views

get arguments passed and put it in an array

is there a way to make the arguments passed become the element of an array? I want to access those arguments individually through array. like this: ./script.ksh arg1 arg2 arg3 then it will become ...
2
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3answers
237 views

List all word pairs that appear in a line together in a file

How can I use awk to run through a file written as: Sarah,Masha,Helen Connor,Jessica,Jennifer,Candace Betty,Sarah,Helen John,Harold,Frank,Daisy and put out all pairs that appeared in a line ...
2
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1answer
351 views

What is an array in awk?

I'm very new to unix and am trying to learn basic awk scripting - during which I keep coming across the word "array", and "associative arrays". I have no clue as to what this is, and don't tell me to ...
1
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1answer
142 views

Is there a simple way to get array of all arguments that do not begin with a hyphen?

zsh includes a powerful utility for parsing command-line options zparseopts, but for quick shell scripts and shell functions, but is there an easy way to extract the array of all command-line ...
6
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2answers
5k views

Associative Arrays in Shell Scripts

I saw a trick for implementing associative arrays in a shell script. For example print array["apples"] could be scripted as echo \$array$key where key=apples. However, there was no mention of how to ...
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2answers
55 views

Is this an array?

I'm currently looking at an existing script that have something like this: variable='val1 val2 val3 val4' Is this another way of setting an array? If not, what is it?