How do I add the option for setting a custom header in a curl config file? Neither of the following lines did work:
Header = 'x-abc: xyz'
header = 'x-abc: xyz'
How do I add the option for setting a custom header in a curl config file? Neither of the following lines did work:
Header = 'x-abc: xyz'
header = 'x-abc: xyz'
 
    
    -H:"x-abc: xyz" works fine:
curl -vvv -K headerfile  http://www.google.com -o /dev/null
* About to connect() to www.google.com port 80 (#0)
*   Trying 74.125.230.243...
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                             Dload  Upload   Total   Spent    Left  Speed
0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0* connected
* Connected to www.google.com (74.125.230.243) port 80 (#0)
> GET / HTTP/1.1
> User-Agent: curl
> Host: www.google.com
> Accept: */*
> x-abc: xyz
.....
 
    
    Regarding your snippet with the code: you just needed to use double quotes " instead of single quotes '. 
With this change both statements work fine.
Header = "x-abc: xyz"
header = "x-abcd: xyz"
