curl - add variable in url batch programming

Question

I have a batch file where I have a variable which prints date in YYYYMMDD - 20160403

for /F "usebackq tokens=1,2 delims==" %%i in (`wmic os get LocalDateTime /VALUE 2^>NUL`) do if '.%%i.'=='.LocalDateTime.' set ldt=%%j
set ldt=%ldt:~0,4%%ldt:~4,2%%ldt:~6,2%
echo Local date is %ldt%

then I am downloading a file which has the date a the end of the url

curl "http://www.example.com/cgi-bin/abc.xyz/%ldt%.txt" -o file-name-%ldt%.txt

where %ldt% has the date for eg: 20160403

but now I am not able to print the date. Any suggesstions ?

your way to get ldt is much too complicated: for /f "tokens=2 delims==" %%i in ('wmic os get localdatetime /value') do set ldt=%i and set ldt=%ldt:~0,8% is enough. — Stephan
– Stephan, Commented Apr 3, 2016 at 11:23
I suppose your posted block is embedded in a larger block and therefore you need delayed expansion. Accessing environment variables modified or defined within a block defined with ( ... ) must be done using delayed expansion. Read example of delayed expansion in batch file, or open a command prompt window, run set /? and read output help explaining delayed expansion on an IF and a FOR example. — Mofi
– Mofi, Commented Apr 3, 2016 at 12:07
M sory it went all over my head. Isn't there a simple solution to this ? I just want to print the value in %ldt% to the url's end that's it. — Deepankar
– Deepankar, Commented Apr 3, 2016 at 15:25

Stephan · Accepted Answer · 2016-04-03 11:20:12Z

1

%date% is an internal windows variable. It is not wise to overwrite it. Use another variable name (for example %myDate%).

By the way: you can restore the original windows variable by (no joke) deleting it: set "date="

answered Apr 3, 2016 at 11:20

Stephan

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Deepankar Over a year ago

I am not sure this solves my question. I have no variable named %date% my date is being stored in %ldt% . The problem in not the variable. I am not able to print the date in curl URL to download it

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