Simple linux command line command to modify an option in a INI like config file

Question

I am looking for a generic command line solution that would allow me to add or modify a configuration option inside a config file (ini like format).

Most linux configur

Answer 1

git config is actually a semi-generic INI interface.

❱ git config --file=/etc/default/nginx somegroup.ULIMIT '-n 4096'
❱ cat /etc/default/nginx
[somegroup]
    ULIMIT = -n 4096
❱ git config --file=/etc/default/nginx somegroup.ULIMIT
"-n 4096"

It doesn't support adding top-level keys, though. All keys have to be placed in an INI style group, hence the "somegroup." above. That makes it unsuitable for your task, but I thought I'd mention it here for others finding their way here.