remove a substring from a string

Question

I want to remove , from a string in jq. Take the following example, how to remove , when outputting 1,2?

$ jq -r .x <<< '{"x":"1,2"}'
1,2

Answer 1

To remove specific positions from a string, use the indices you want to keep:

jq -r '.x | .[:1] + .[2:]' <<< '{"x":"1,2"}'

12

Demo

To remove one occurrence at any position, use sub to replace with the empty string

jq -r '.x | sub(","; "")' <<< '{"x":"1,2,3"}'

12,3

Demo

To remove all occurrences, use gsub the same way

jq -r '.x | sub(","; "")' <<< '{"x":"1,2,3"}'

123

Demo

Answer 2

You didn't make clear what output you wanted. A literal reading suggests you want 12, but I find it more likely that you want each of the comma-separated items to be output on separate lines. The following achieves this:

jq -r '.x | split(",")[]'

For the provided input, this outputs

1
2

Demo on jqplay

Answer 3

You can use sub.

Filter

.x | sub(","; " ")

Input

{"x":"1,2"}

Output

1 2

Demo

https://jqplay.org/s/IaViogZTsI