top cell name in GDSII db

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bsrin

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Hi Everybody,
How can I get top cellname in gdsII database without opening it. I mean, is there any cadence/calibre command or any script which tells top cellname with gdsII database taking as input.

Thanks in advance.
 

If you don't get a cadence/calibre command, you could try a std. UNIX/LINUX command:
od -a <file_name.gds> | head

Here's an example from one of my old .gds files:
od -a CLKBUF3.gds | head
The top cellname (CLKBUF3) shows up after an "ff" (new page control character) followed by 2 "ack" characters.

I have found this setup in quite a lot of my .gds files, but of course I'm not sure if this is valid for all of them.
May be this can help?
 

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