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Consider an associative array in bash (versions 5.2.15(1)-release and 5.2.21(1)-release): declare -A ufs=(); ufs["one"]=1; ufs["two"]=2; ufs["three"]=3 printf '> %s\n' ...
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When I run the following code declare -A X # get an associative array index="a'b" # a somewhat weird index X[$index]="this is set" echo "<<${X[$index]}>>" if ...
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I have a pipeline that deploys scripts into a temporary dir. I need to rellocate them into their actual proper directory. #!/usr/bin/sh DEPLOY_HOME=/opt/xxx function getDeployedFiles { ls ${...
KrOo Pine's user avatar
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In TCL, I have a few arrays whose names have a numeric suffix (i.e., whose names end with a number), like below: array set ps0 [ list 0 15.885 1 55.43 1 0.254 2 0.227 3 0.177 ] array set ps1 [ list 0 ...
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I am playing a bit with associative arrays in Bash and I found the following difference when declaring the exact same associative array with and without declare. The code is as follows: #!/usr/bin/env ...
chemacabeza's user avatar
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bash evaluates the following expression without any objections: declare -A SPANISH=( [rojo]=red [verde]=green [azul]=blue ) ...but it does not like this one one bit: declare -A SPANISH=( $( echo &...
kjo's user avatar
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I have a file with 4 columns. When I put these 4 columns into an array using NR as the index, the entries are duplicated somehow. See below for an elaboration of the issue. The first 5 lines of the ...
Xuan's user avatar
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I have two tab separated files, each with two columns. I want to create a file which contains overlapping elements by column 1 of the two files. To do so, I put file 1 in an array first then scanned ...
Xuan's user avatar
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I have a lot of associative arrays and i want to use only 1 loop. select the array for loop by a given name I want to select/build a part of the arrayname with a variable and than loop with that name, ...
ReflectYourCharacter's user avatar
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I'm trying to create a summary of how many files in a directory have n number of lines in them. I'm using wc -l * | sort to print out the number of lines against the name of each file. What I'm trying ...
Doodling's user avatar
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I would like to use some kind of minimalistic template engine with pure bash and envsubst: user@host:~$ env -i FOO=foo BAR="bar baz" envsubst '$FOO,$BAR' \ <<< 'Hello "$FOO&...
user00705358365913's user avatar
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# SETUP PHP81 SYMLINKS declare -A cgi=([path]="/opt/remi/php81/root/usr/bin/php-cgi" [filename]="php-cgi81") declare -A config=([path]="/opt/remi/php81/root/usr/bin/php-config&...
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I know about How to create JSON from associative array but that's not my problem. I have this associative array: declare -A aliases aliases[Index]=components/Index/Exports aliases[Shared]=components/...
Saeed Neamati's user avatar
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Does awk use separate chaining, open addressing or does it have its own way of handling collisions in a hashmap? Do gawk and nawk implement the same algorithm? Thank you.
Zidani Mehdi's user avatar
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When i write a script named array_call_self.sh as follows #!/bin/bash declare -A num word word=( [a]='index_a' [b]='index_b' [c]='index_c' ) num=( [a]=1 [b]=2 [c]=3 ) array=${$1[@]} for i in ${$...
AKA4's user avatar
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I have the following associative array. var1="dog" var2="cat" var3="moose" declare -A asar01=( ["one"]="$var1" ["two"]="$var2" [&...
Dave's user avatar
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I am trying to pass a bash associative array by reference into a function and then be able to see the changed content back in the main script after the function is complete. I have found what seems to ...
demarcmj's user avatar
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I have a bash script where I define UTF-8 Greek Symbols in a file named greek-utfb.sh. I want to run tests that display the variables for printing the greek letters in the file greek-utfb-scout. --- ...
Isabel's user avatar
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I am trying to map a hostname to a queue manager name using the following array. I get an error with bad array script. What am I doing wrong here declare -A managers while read -r mgr host; do ...
MO12's user avatar
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I already have a shell command which creates lines like this one (from a long ss -an....|...|...): 5 10.1.1.20 3307 (Nb IP port) I have an echo command to simulate the answer: echo -e "5 10.1.1....
Christian COMMARMOND's user avatar
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Hello StackExchange pros! I am working on a zsh project for macOS. I used typeset to create three associative arrays to hold values, and a fourth array to reference the individual arrays. Is it ...
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In Bash (4 or above), if I have an associative array dict, I can set its value like dict[apple count]=1 and I would be able to access it with ${dict[apple count]}. Does Zsh allow space in key names? ...
Franklin Yu's user avatar
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I have read about specifying "10#", but I don't think it's my case as I am not doing number comparison. I am trying to create an associative array in Bash, and the code worked fine until ...
Polizi8's user avatar
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A few Bourne-like shells support associative arrays: ksh93 (since 1993), zsh (since 1998), bash (since 2009), though with some differences in behaviour between the 3. A common use is for counting ...
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An associative array I have has arbitrary keys, including keys containing backquotes, brackets, etc: $ typeset -A arr $ key='`' $ arr[$key]=backquote $ echo $arr[$key] backquote I now need to unset ...
Michaël's user avatar
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I am writing a bash script on CentOS 7.5 that will execute some MongoDB commands. One of these commands will set replication servers. According to project, number of servers can be different. I have ...
BlackCrystal's user avatar
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I'm having trouble assigning values to a specific bash index, but apparently only when the index variable is set using a while read loop. Taking this code as a test example: #!/bin/bash read -d '' ...
steinocaro's user avatar
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Following this answer, I want to apply the approach on my script. The basics of it is: foo="bar" baz="foo" echo "${!baz}" bar I want to provide translated strings, like ...
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So I know that you can test for the existence of a regular parameter via indirect expansion by doing something like: foo=1 bar=foo (( ${(P)+bar} )) && print "$bar exists" And I know you can ...
Matt Wilder's user avatar
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I declare an associative array: declare -A array=([a]=blue [b]=red [c]=yellow) now I can do: echo ${array[@]} --> blue red yellow or echo ${array[b]} --> red or echo ${!array[@]} --> a ...
pietro letti's user avatar
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I am refactoring a script that displays a text menu similar to this: Select a mounted BTRFS device on your local machine to backup to. 1) 123456789abc-def012345-6789abcdef012 (/) 2) 123456789abc-...
MountainX's user avatar
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I have the same exact problem as described in this SO post ("bash associative array key string with colon is giving error"): https://stackoverflow.com/q/40406187/10639803 The solution is to use ...
datsb's user avatar
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Recently, I am into security logs and want to make it better way on bash-shell. I found out in awk back-references are only stored by 9. But I need to use 10 back-references. Tried awk '{print ...
KeiTheNoop's user avatar
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I have a difficulty with awk. I want to concatenate columns if first fields and 3field matches from 2 different files with awk. Probably, It'd better to use array function, I am very confused with it. ...
KeiTheNoop's user avatar
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i need to combine ARRAY1 and ARRAY2 into an associative array like ARRAY. i'm using this code: mapfile -t ARRAY1 < <(/bin/awk '{ print $ 1 }' /output/gen_branch) mapfile -t ARRAY2 < <(...
BlackCrystal's user avatar
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How do you pass variable values within a process substitution to a loop within that process substitution? I'm reading a csv file into an associative array, and while reading each line, I would like ...
gj.'s user avatar
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in a bash script i'm using an associative array to create tables, tablespaces, indexes and partitions in my database. this is the script (the main script is too long with complicated queries so i ...
BlackCrystal's user avatar
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I have the following script called .bash_functions.test which is already sourced by my .bash_functions script: # vim: set syn=sh noet: mp4Options_BIS="-movflags +frag_keyframe" declare -A ...
SebMa's user avatar
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I have two files file1.csv (20 columns 410k rows) and data.csv (4 columns 1800 rows). What I am trying to do is if data.csv 1st column matches file1.csv 2nd column overwrite 1st column in file1.csv ...
peti27's user avatar
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I have a program that acts like a menu. It has an associative array called config such as: declare -A config=( [h]="?" [c]="?" [x]="?" [l]="?" [t]="?" [n]="?" ) In the main loop there's a check to ...
KuboMD's user avatar
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I am encountering no matches found when using map in zsh: #!/bin/zsh declare -A map=(["8761"]="Eureka服务" ["11001"]="用户微服务") Why would this happen, and how can I fix it? This is the error: ~/source/...
Dolphin's user avatar
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I've got an array that contains duplicate items, e.g. THE_LIST=( "'item1' 'data1 data2'" "'item1' 'data2 data3'" "'item2' 'data4'" ) Based on the above, I want to create an associative array that ...
Bart's user avatar
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Team, am setting some variables in an associative array but its output is not resulting anything.. any hint?> #/bin/bash #IOEngine="psync" #TestType="read" IOEngine="libaio" TestType="randread" ...
fma abd's user avatar
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I want an associative array in my bashrc file and I want to add to or delete from it whenever needed, but if I put the array declaration in the bashrc file it will get redeclared every time bash is ...
aderchox's user avatar
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10 votes
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Let's say I have an associative array in bash, declare -A hash hash=( ["foo"]=aa ["bar"]=bb ["baz"]=aa ["quux"]=bb ["wibble"]=cc ["wobble"]=aa ) where both keys and values are ...
Kusalananda's user avatar
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In a script I have an associative array like: declare -A VARS=( ["key1"]="value1" ["key2"]="value" ) Is there a single command to transform that into a parameter list in the form --key1=value1 --...
Matteo Tassinari's user avatar
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3 answers
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How to check if a dictionary (associative array) is empty? I just declare one using declare -A dict. I want to know if it is just declared but not have any key.
focus zheng's user avatar
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I made an associative array as follows. To give a few details, the keys refer to specific files because I will be using this array in the context of a larger script (where the directory containing the ...
mf94's user avatar
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1 answer
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I'm trying to build an associative array in a function from a list pass in via an arg, but It just isn't working: #!/usr/bin/env bash function cwd { echo "$( cd "$( dirname "${BASH_SOURCE[0]}" )" &...
Thermatix's user avatar
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In Example_1, when i have declared city to be an array with declare -A, why is Bangalore output first when the array is printed in the for loop? Bangalore Remote Kolkata Ahmedabad Hyderabad Pune ...
superman's user avatar
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