Bash string operation

Question

I am trying to translate markdown file into confluence markup as a complete beginner. I need to make [Title](https:// site.com) into [Title|https:// site.com]. If it was just one link, i could add it to a var and printf it, but I am having trouble figuring out how to do it if I have 10 links for example. Previously I used CONTENT=$(echo "${CONTENT//# /h1. }") to replace strings but since now every string is different, I am stuck at how to solve this. I found the solution written in javascript: http://chunpu.github.io/markdown2confluence/browser but fail to understand how to do it in bash.

Answer 1

For this test file

$ cat file
[Title](https://site1.com)
[Title](https://site2.com)
[Title](https://site3.com)
[Title](https://site4.com)
[Title](https://site5.com)
[Title](https://site6.com)
[Title](https://site7.com)
[Title](https://site8.com)
[Title](https://site9.com)
[Title](https://site10.com)

Sed variant:

$ sed 's/\](/|/;s/)/\]/' file
[Title|https://site1.com]
[Title|https://site2.com]
[Title|https://site3.com]
[Title|https://site4.com]
[Title|https://site5.com]
[Title|https://site6.com]
[Title|https://site7.com]
[Title|https://site8.com]
[Title|https://site9.com]
[Title|https://site10.com]

Bash variant:

while read -r line; do
    line=${line//](/|}
    line=${line//)/]}
    echo $line
done < file
[Title|https://site1.com]
[Title|https://site2.com]
[Title|https://site3.com]
[Title|https://site4.com]
[Title|https://site5.com]
[Title|https://site6.com]
[Title|https://site7.com]
[Title|https://site8.com]
[Title|https://site9.com]
[Title|https://site10.com]

Awk variant:

$ awk '{ sub(/\]\(/, "|"); sub(/\)/, "]"); print }' file
[Title|https://site1.com]
[Title|https://site2.com]
[Title|https://site3.com]
[Title|https://site4.com]
[Title|https://site5.com]
[Title|https://site6.com]
[Title|https://site7.com]
[Title|https://site8.com]
[Title|https://site9.com]
[Title|https://site10.com]