All Questions
11 questions
4votes
2answers
405views
Is it possible to apply substring expansion to all elements of a zsh array?
Let's say I'd like to remove the first two and last three characters from all elements of an array e.g. results=( QK9H9UtADCgnG AlaLkCADjQ krsxseW8H1VrU 6nBG94ZbCWQ ) I'd like to end up with results=(...
- 85k
4votes
2answers
1kviews
Zsh use an array in a find command
I would like to rsync over a few files, specified with an array, and delete any other file in a directory. The only approach I can think of is to remove other files using find, and rsync over the ...
- 752
1vote
1answer
2kviews
How to retrieve items from an array of arrays?
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 ...
1vote
0answers
113views
Bash: Parameter Expansion | Parameter Transformation on List of Assoc.Array Keys
Is this possible(bash v5.0.3)? I'd like to dynamically populate a select list using the keys of an associative array (for further code reuse & script automation). Some keys simply require ...
10votes
5answers
7kviews
Using parameter substitution on a Bash array
I have file.txt that I need to read into a Bash array. Then I need to remove spaces, double quotes and all but the first comma in every entry. Here's how far I've gotten: $ cat file.txt 10,this 2 0 ...
- 186
0votes
1answer
357views
Shell Function: Sequence of Pipelines as Argument
I have a shell function (in .bashrc) which creates a temp file, executes the arguments (including all sequence of pipelines), redirects it to a temp file and then open it in VS Code. I invoke the ...
- 2,146
2votes
4answers
7kviews
How to get bash indexes of parameters array?
I want indexes of parameters, and can get it by dummy var: dummy=( $@ ) echo ${!dummy[@]} but is there straight way to get them, something like $!@ ... not working $!* ... not working ... or ...
- 2,178
3votes
2answers
1kviews
Can a bash array be used in place of eval set -- "$params"?
I'm taking a look at the optparse library for bash option parsing, specifically this bit in the generated code: params="" while [ $# -ne 0 ]; do param="$1" shift case "$param" in --my-...
- 37.3k
13votes
2answers
23kviews
Count number of elements in bash array, where the name of the array is dynamic (i.e. stored in a variable)
Brief statement of the question: Is there built-in bash method to count number of elements in bash array, where the name of the array is dynamic (i.e. stored in a variable), without resorting to ...
- 293
47votes
4answers
32kviews
Bash: slice of positional parameters
How can I get a slice of $@ in Bash without first having to copy all positional parameters to another array like this? argv=( "$@" ) echo "${argv[@]:2}";
- 2,263
75votes
4answers
51kviews
Transform an array into arguments of a command?
I have an array of "options" of a command. my_array=(option1 option2 option3) I want to call this command in a bash script, using the values from array as options. So, command $(some magic here with ...
