A array is the simplest data-structure for storing items in continuously memory
1
vote
3answers
178 views
Put big data into array or store by AWK
Example data
fafafafa
00005e58
da1e5afe
00000000
*
fafafafa
00005e58
da1e5afe
00000000
*
00000001
ffffffff
555eea72
00000000
*
00000004
fafafafa
01da1300
*
00000004
02991c00
fafafafa
01da1300
...
5
votes
2answers
61 views
In a loop over an array, add an element to the array
I have a problem with for loop in bash. For example:
I have an array ("etc" "bin" "var").
And I iterate on this array. But in the loop I would like append some value to the array. E.g.
array=("etc" ...
3
votes
1answer
41 views
bash silently does function return on (re-)declare of global associative read-only array
Obviously cut out of a much more complex script that was more meaningful:
#!/bin/bash
function InitializeConfig(){
declare -r -g -A SHCFG_INIT=( [a]=b )
declare -r -g -A SHCFG_INIT=( [c]=d )
...
1
vote
2answers
57 views
How to add all values in an array
I have been stuck on this for way to long now.
Tried googling and couldn't find what I was looking for.
I simply need to add all the values in an array.(array called packets)
I have gotten to the ...
2
votes
1answer
23 views
Why does this array related code print the index at the end of each line?
I'm having problems working with an array in BASH. I've simplified the problem down to the following code:
#! /bin/bash
A1[0]="user1 user2 user3"
A1[1]="user4 user5 user6"
for each in ${!A1[*]}
...
2
votes
1answer
31 views
How is the order for which keys are stored and reteived determined in awk?
I am just starting to learn awk and was familiarizing myself with associative arrays only to discover that the order in which the keys were retrieved (or stored) didn't make a whole lot of sense. As ...
1
vote
3answers
71 views
Find the complement set of an array?
Following from this question, where I wish to extract 10 random lines from a file, I now wish to also have the remaining 90 lines as a separate file.
Since the document has 100 lines, indexing from 1 ...
1
vote
2answers
42 views
Re-print an array in a certain format?
I wish to take 10 random lines of file, which is 100 lines long. First, I randomly generate 10 integers between 1 and 100 (inclusive) with
ind=$(shuf -i 1-100 -n 10 | sort -n)
Then, I wish to use ...
2
votes
3answers
61 views
How can I prepend and append to each member of an array?
I have an array:
CATEGORIES=(one two three four)
I can prepend to each array member using parameter expansion:
echo ${CATEGORIES[@]/#/foo }
I can append to each array member the same way:
echo ...
2
votes
2answers
45 views
bash + how to define array variable with instance number
Is it possible to define variable that is called for example machine1 as machine$counter ( while counter=1 ) ?
For example, I created the /tmp/config.txt file and set the machine1 as array:
$ more ...
1
vote
1answer
63 views
Combine Bash associative arrays
I am trying make a script that combines arrays on demand. Here is the script:
#! /bin/bash
declare -A code
code=( [H]="h" [E]="e" [L]="l" [P]="p" [M]="m" [E]="e" )
I need to print "help me" - ...
1
vote
2answers
59 views
Dynamically create array in bash with variables as array name
This has been asked several times, but none of the methods work. I would like to dynamically create arrays with array names taken from the variables. So lets start with just one array for now:
...
0
votes
2answers
23 views
How to print arguments from a known element until an unknown element of an array with Bash
I am having a blonde moment.
This is my data from myfile.csv
1429829254,e,SE,StckXchg,HDCU3000623,d,scan,253,47968,94,1420824420,JSSE-213,199,BS,KIT,*OUT*
...
4
votes
3answers
475 views
Is there a way of reading the last element of an array with bash?
If I have an array with 5 elements, for example:
[a][b][c][d][e]
Using echo ${myarray[4]} I can see what it holds.
But what if I didn't know the number of elements in a given array? Is there a way ...
1
vote
1answer
49 views
create an array
I want to learn about arrays and how to assign values to them, so I found this tutorial
While running the following script:
#!/bin/bash
$names=([0]="Bob" [1]="Peter" [20]="$USER" [21]="Big Bad ...
-1
votes
1answer
64 views
Accessing array elements within process substitution bash
I've got a text file which looks like this:
b4238ca2-cb8d-11e4-8731-1681e6b88ec1,https,username,password,ipaddress
b4238f0e-cb8d-11e4-8731-1681e6b88ec1,https,username,password,ipaddress
...
1
vote
1answer
36 views
Setting Qualifiers for Bash Array
I have a bash script that is running an SNMPGET of two values. I want to take the results and put them in an array.
Here is the code:
OUTPUT=`snmpget -v2c -c public -Oqv 192.168.0.33' \
' sysName'\
...
1
vote
2answers
59 views
Splitting the working directory in a bash script
If a do:
IFS="/" read -ra PARTS
And type in a path manually, it creates the array "PARTS" as hoped, however:
IFS="/" read -ra PARTS <<< $(pwd)
creates an array with a single element, ...
3
votes
3answers
157 views
Bash : Native way to get rid of quotation around each array member
I read an array from another script. This array needs to put " " around all array members since some members are empty.
in_file=./data
vector=($(./readdata.sh 0 $in_file))
for index in ${!vector[@]}
...
1
vote
1answer
124 views
how to count the length of an array defined in bash?
I'm new to bash and can't find a good tutorial to answer my question.
array=( item1 item2 item3)
for name in ${array[@]}; do
echo current/total
... some other codes
done
I want to calculate ...
1
vote
2answers
46 views
Read file remove spaces and store in array
I have a file with the following content:
list:
blue,none
red,none
orange,plot
baseball , none
university,none
school,none
desk,plot
monitor,none
earphone,none
I need to read this file, ...
1
vote
3answers
59 views
access elements in string array - stray @ symbol
I have created an array (3 elements), and each element contains a comma delimited string.
The array was created by reading a file line by line - the file contains fields output from a database.
I have ...
2
votes
2answers
143 views
Create array in bash with variables as array name
I'm not sure if this has been answered, I've looked and haven't found anything that looks like what I'm trying to do.
I have a number of shell scripts that are capable of running against a ksh or ...
2
votes
1answer
52 views
Push onto array with find exec
I want to iterate over all the files found by find and add each one to an array. Here's what I have so far:
myarray=()
find . -name '*.php' -exec myarray\+=\({}\) \;
echo "${myarray[@]}"
Instead, ...
4
votes
1answer
386 views
Bash Shell Script Array Length Off By One
The length of an array in my bash shell script appears to be off by one. I have 11 elements in a text file that I am reading in to an array, but my array length seems to be 12.
(( count = 0 ))
while ...
1
vote
1answer
110 views
Processing output from an sqlite db into a ksh array with spaces
I am querying an SQLite3 database like so:
input=$(-separator "," "SELECT field1,field2,field3 FROM table1")
and get this result:
Red,Yellow is a color,Blue
I need to insert this into an array, ...
3
votes
1answer
100 views
How to sort an associative array and retain the keys?
I have an array with filenames as keys and a numerical value as values.
MYARRAY[00001.jpg] = 31
MYARRAY[00002.jpg] = 200
MYARRAY[00003.jpg] = 98
I need to sort them so they are ordered by value.
...
0
votes
2answers
74 views
Multiple variable expansion modifiers in the same expression
Why does the following idiom not work in bash 4.1.0?
if [[ "${FUNCNAME[*]:1/$FUNCNAME/}" != "${FUNCNAME[*]:1}" ]]
Here it is in context...
function isCircularRef_test () {
#
### Seems like ...
-1
votes
2answers
59 views
if else statement
I have a case statement inside some of the if statement, but after doing the case statement inside the if statement, the loop ends. After the case statement, it is supposed to go to the next value on ...
1
vote
1answer
45 views
Whats wrong in creating/printing this array?
To find the average time taken to create certain files, I'm using this minutes array, then would simply use bash arithmetic to find the average. However I'm unable to get the difference except for the ...
2
votes
3answers
265 views
Loop over associative arrays by substring
In the following code, I create some associative arrays in a loop. The consist of two strings, a string identifier and a year. After creation, I want to access the arrays in a loop based on the ...
2
votes
1answer
35 views
CInt Configure Script: Syntax error at left parenthesis
I am trying to install CInt. When running ./configure, I get the following error:
./configure: 23: ./configure: Syntax error: "(" unexpected
Here is the relevant section of configure:
# configure ...
0
votes
1answer
383 views
Bash script: array elements containing space character [duplicate]
I'm getting started with bash scripting. I'm working with array elements that contain space characters. In the code below, the third array element is "Accessory Engine". I tried to set the space ...
1
vote
1answer
129 views
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 ...
0
votes
2answers
146 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.
1
vote
1answer
357 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 ...
0
votes
1answer
94 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 ...
1
vote
3answers
62 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 ...
0
votes
1answer
46 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 ...
2
votes
2answers
775 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": [
{
...
1
vote
3answers
755 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 = $b: a is not equal to b"
...
2
votes
2answers
204 views
Create arrays with brace expansion in loop
I would like to generate a number of arrays that differ only by year. In the loop, I create the arrays with brace expansion and a variable.
I tried the following code without success:
...
2
votes
0answers
53 views
Generate array of strings combined with number
I would like to generate a local array in a shell/bash script that consists of the following elements: JF-1998, JF-1999, JF-2000,... , JF-2011. That is, a string JF- combined with the years from 1998 ...
1
vote
1answer
96 views
awk array using number as value did not work
I have a reference file:
Refrence File
Dpse\GA30012 FBgn0000447 chr2 26607738 26607962 -1
Dpse\GA19764 FBgn0085819 chrX 28571020 28571736 -1
Dpse\ttk FBgn0000100 chr2 ...
0
votes
2answers
833 views
How can I store each seperate entire line in a text file into an array?
I have a file called "threewords". It contains the information:
\#gray speedy bee
gr-A | sp-E-d-E | b-E
\#gray greedy pea
gr-A | gr-E-d-E | p-E
When I run the command:
cat threewords | grep ^# ...
0
votes
2answers
69 views
for loop not working for multiple lines
I have a array like this "Apple Banana Clementine Date"
I have to print like this:
1. Apple
2. Banana
3. Clementine
4. Date
Script file:
for i in "${fruits[@]}"; do
echo "$lineno. $i "
...
0
votes
0answers
40 views
awk - how does the for loop work when counting words? [duplicate]
I have got the following awk script from here that counts the frequency of the words in a file-:
# Print list of word frequencies
{
for (i = 1; i <= NF; i++)
freq[$i]++
}
END {
...
2
votes
1answer
56 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
votes
3answers
274 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 ...
1
vote
0answers
73 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 ...
